Better Health While Aging

Practical information for aging health & family caregivers

COVID Vaccination for Aging Adults:
What to Know & Do

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As everyone knows, the COVID-19 pandemic has caused a public health — and societal — crisis of epic proportions. The impact has been especially severe on older adults, who are more likely to be severely affected by COVID, and who represent a distressingly high proportion of the U.S.’s COVID deaths.

But, in an amazing feat of scientific achievement, COVID vaccines were developed in truly record time, and in 2021, a large-scale vaccination campaign has been rolled out in the U.S.

This doesn’t mean everything will be back to normal very soon. But vaccination is key to reducing the dangers of COVID, because to date, the Pfizer and Moderna vaccines have proven to be extremely effective in preventing hospitalizations and deaths due to COVID. They have also been shown to be safe.

Although it’s exciting that we benefit from the significant protection of COVID vaccines, these vaccines have also raised a lot of questions for people. This article summarizes what I think is most important for older adults and families to know about coronavirus vaccination.

In particular, I want to offer science-based information to help with common questions, such as “Which COVID vaccine is better for seniors?” or “Which COVID vaccine for a 90-year-old?”

I’ll also cover vaccine safety, and what we know so far about how effective these COVID vaccines are in older adults. And in 2021, I am adding information related to the Delta variant and boosters.

Latest Updates:

Starting from 2022, I’ll be posting updates to a new page, which is here:  COVID & Aging Adults: 2023 & 2022 Updates

Here is my most recent video update, from August 14, 2023:

In this update, I discuss the latest COVID news for August 2023, including the recent rise in COVID cases, whether to get boosted again now or later, what we know about the upcoming fall COVID vaccine, and more. 

In this episode:

  • What to know about the new COVID wave
  • Update on the EG.5 subvariant
  • Whether vaccines work against the newest variants
  • Update on the upcoming 2023 COVID vaccine booster
  • Answers to FAQs
    • Should you get boosted again now or wait?
  • Symptoms of COVID & what to do if you catch it
  • What will really help us live with COVID

Note: For the masks I recommend, you can get the 3M V-flex here https://amzn.to/3OxrsRY, and the Powecom KN95 here https://amzn.to/3W9frXf

These are Amazon affiliate links, so any purchases will help support Better Health While Aging, thank you!

For all links and resources mentioned in the update, see the related podcast page here.


Here is the last 2021 video update, from Dec 16, 2021:

This video update covers Omicron, COVID boosters, plus how to search the CDC data to see just how well vaccines have worked, even in older adults. I also show the data demonstrating that vaccinated people age 80+ are still at higher risk of serious COVID than unvaccinated people under age 50; this is why fully vaccinated older adults should take precautions during the current surge!

The update addresses these FAQs:

  • What do we know about Omicron so far, and will the vaccines remain protective
  • Should I get vaccinated against COVID?
  • Should my 90-year-old mother get the COVID vaccine?
  • How well does the vaccine work in older adults? How well does it work over time, and against Delta?
  • Should I worry that the vaccine might harm me (or my frail older parent)?
  • Who should get a COVID booster and why?
  • How to stay safer during the holidays.

For related links specific to this update, see the related podcast show notes page.

What’s Most Important to Know About COVID Vaccination

As of December 17, 2021, what is most important to know is:

  • There is currently a COVID surge in the US, involving both Delta and the newer Omicron variant. Very high case numbers are expected. Unvaccinated older adults are at quite high risk of hospitalization or death due to COVID (as explained in 12/16/21 video update). Even vaccinated older adults are at some risk, and should take extra precautions during the surge, to avoid being exposed to COVID.
  • The COVID vaccines are safe and remain very effective at preventing hospitalization or death from COVID (especially the mRNA vaccines from Pfizer and Moderna). Even after 5-6 months, the vaccines continue to provide excellent protection against hospitalization and death due to COVID, even in older age groups.
  • After several months, the vaccines do become less effective at preventing mild COVID infections and breakthrough infections can happen. These are unlikely to become serious.
    • The small number of breakthrough infections that become very serious are mostly in people who are older or have serious chronic medical conditions. (Note: General Colin Powell, who died of a breakthrough COVID infection, was 84 and had a very serious blood cancer.)
  • The Omicron variant is very contagious and its mutations enable it to cause breakthrough infections in people who are vaccinated or have previously had COVID. Vaccination is expected to continue providing good protection against hospitalization and severe COVID.
  • Both Omicron and Delta are causing symptoms and (usually) mild COVID illness in fully vaccinated people. There is also evidence that fully vaccinated people can transmit the Omicron and Delta COVID variants to others. Many COVID cases in vaccinated people are asymptomatic, as well.
    • This means you should not assume that you can’t get COVID from a fully vaccinated person.
    • If you are vaccinated, you should be careful about the possibility you could transmit COVID to another vulnerable person, such as an unvaccinated child or frail older person.
  • Getting vaccinated is safe, will protect you personally from serious illness due to COVID, and helps reduce the impact of COVID in our communities. I recommend vaccination for all adults. I have personally vaccinated my own children (ages 13 and 11), to reduce risk to our family members who are in their 90s.
  • I also recommend resuming wearing masks indoors and taking COVID exposure precautions (ventilation, minimize time indoors with people outside your household), at least until COVID case rates decline.
  • Getting a booster dose of the vaccine does seem to reduce the risk of a vaccinated person getting a breakthrough infection.  I recommend getting a COVID booster.

What COVID vaccines are currently available?

You can see which COVID vaccines have been approved for use in the U.S. on the FDA’s COVID-19 Vaccines page: FDA COVID-19 Vaccines.

As of December, 2021, in the U.S., three COVID-19 vaccines are in use: Pfizer, Moderna, and Janssen (which is the pharmaceutical branch of Johnson & Johnson).

On December 11, 2020, the FDA granted an emergency use authorization (EUA) to Pfizer’s COVID-19 vaccine. Moderna was granted a similar EUA on December 18, 2020.

On February 27, 2021, the FDA granted emergency use authorization to Johnson & Johnson’s COVID vaccine. Unlike the Pfizer and Moderna vaccines, which require two injections spaced about a month apart, the J&J vaccine only requires one injection.

On August 21, 2021, the FDA authorized an additional dose of COVID vaccine for people who are moderately to severely immunocompromised.

On August 23, 2021, the FDA granted full authorization to Pfizer’s vaccine.

On Sept 22, 2021, the FDA authorized a single booster dose for Pfizer COVID vaccine recipients who are age 65 or older, plus for a few other select groups.

On October 20, 2021, the FDA authorized a booster dose for older Moderna COVID vaccine recipients (plus for a few other at-risk groups) and for Johnson & Johnson vaccine recipients (all).

On December 16, 2021, following a review of the effectiveness and safety of the Johnson & Johnson vaccine, the CDC announced that it’s preferred that adults receive one of the mRNA vaccines (Moderna or Pfizer).

Many other vaccines have been approved in other countries, such as the Oxford AstraZeneca vaccine in the U.K. You can see a list of COVID vaccines on the NYTimes Coronavirus Vaccine Tracker page, which also includes a helpful summary of the vaccine approval process.

Vaccines were initially prioritized for frontline health workers and nursing home residents, and then were prioritized in most areas for older adults. As of May 2021, vaccinations are available in most parts of the US to all adults who wish to be vaccinated.

The Pfizer vaccine received emergency approval for children ages 12 and older in May 2021, and a pediatric dose for children ages 5-11 received approval in November 2021.

About the mRNA COVID Vaccines (Pfizer and Moderna)

How the Pfizer and Moderna COVID vaccines work

The Pfizer and Moderna vaccines use a new approach for vaccination: messenger RNA (“mRNA”). This technology had never before been used in a licensed vaccine. But it was under development at the NIH about 10 years prior to the pandemic, and it offers several advantages over pre-existing vaccine technology.

Whereas most vaccines work by injecting a person with a killed virus or portion of virus, mRNA vaccines use a totally different approach: they contain limited instructions that prompt the body’s cells to create copies of the COVID spike protein component (but not the whole virus).

The body’s immune system then recognizes the COVID spike protein as foreign, and builds up immunity. This means that when the body later encounters the complete COVID virus during an infection, it can ramp up quickly and defeat the virus before the person feels ill, or becomes seriously ill.

So, it’s impossible to get COVID from the mRNA COVID vaccines, because they don’t inject killed or weakened COVID, and the injected instructions cannot cause the body to create complete functioning COVID virus.

Another advantage of the new mRNA technology is that vaccine doses can be manufactured much more quickly.

You can learn more about these mRNA vaccines here: CDC: Understanding mRNA COVID-19 Vaccines

Unfortunately, there has been a lot of misinformation spread about the mRNA COVID vaccines. An excellent article debunking the false claims is here: Irish Professor Makes Unfounded Claims About Long-Term Effects of mRNA Vaccines

For the Pfizer and Moderna vaccines, two doses are required (3 and 4 weeks apart, respectively).

mRNA COVID Vaccine Efficacy in Older Adults: What we know so far

What we know about how well these vaccines work is based on two types of information: randomized trial data submitted to the FDA to get emergency use authorization, and then observational analyses conducted over the past several months.

CDC data indicate that since vaccination began, COVID case rates and death rates have fallen dramatically in nursing home residents and among people aged 85+. A UK study also noted a significant drop in COVID hospitalizations among older adults after their vaccine rollout. (See the video here for an explanation of where to find this data.)

Also, in May 2021, researchers published an updated study of the Pfizer vaccine efficacy in Israel. This found a real-world overall vaccine efficacy of 94% (93% in over 65 age group). Table 3 of this study report also reported vaccine efficacy in 3 older age groups (over 65, over 75, and over 85). (I explain this data in my COVID update video from 5/14/21.)

This data found that vaccine efficacy dropped in the older age groups for asymptomatic infection (83% in people over age 85) but remained around 97% for symptomatic COVID and severe COVID, with no drop seen in the older age groups. This suggests that although the risk of passing on COVID or having a breakthrough infection may go up as people get older, even those over age 85 should expect to get excellent vaccine protection from serious COVID illness.

A CDC report published in early May of 2021 found that getting either the Pfizer or Moderna vaccine was 94% effective against COVID-19 hospitalization among fully vaccinated adults aged 65 and older.

At this time, research and observational data overall supports the efficacy of the mRNA vaccines, even in the very old. The main group that seems to be an exception is those with significant immunocompromise, such as those taking certain immune medications, those who’ve had transplants, and those with a history of hematological malignancies (“blood cancers”) or other conditions affecting their B cells and T cells. For more on this, see Researchers Tie Severe Immunosuppression to Chronic COVID-19 and Virus Variants.

The CDC recently began reporting COVID cases and deaths based on vaccination status. This NY Times article includes graphics based on the CDC data, showing how vaccination reduces cases (and deaths) for every age group: Who Had Covid-19 Vaccine Breakthrough Cases?

For these reasons, I highly encourage COVID vaccination for adults of all ages, and especially for older adults.

What we know about COVID vaccine protection weakening over time

Several observational studies indicate that the three COVID vaccines become less good at preventing mild infection after a few months. However, so far they have continued to provide excellent protection against hospitalization, especially in people under age 65.

Most studies show that after several months, Moderna remains more effective than Pfizer, and both are more effective than Johnson and Johnson.

For this reason, COVID boosters are now being recommended for all adults, and especially for older adults or those at risk of severe COVID. For more on COVID boosters:  CDC: COVID-19 Vaccine Booster Shots

For data on how boosters increase antibody levels, see  Heterologous SARS-CoV-2 Booster Vaccinations – Preliminary Report.

Note: A COVID vaccine booster is not technically the same as getting a “third dose,” which was approved by the FDA on 8/21/21 for certain people who are immunocompromised and unlikely to mount sufficient response to the usual COVID vaccine schedule. For more on who qualifies for this type of extra dose, see CDC: COVID-19 Vaccines for Moderately to Severely Immunocompromised People.

What we know from the COVID trial data submitted to the FDA

The Pfizer phase 3 trial data was published in the New England Journal of Medicine (NEJM) on December 10, 2020, and the Moderna phase 3 trial data was published on December 30, 2020.

The Pfizer trial included about 43000 participants, who were randomized to get the Pfizer COVID vaccine or a placebo injection. During a follow-up period of a few months, there were 8 cases of Covid-19 among vaccine recipients and 162 cases among placebo recipients. The authors concluded that the vaccine was 95% effective in preventing Covid-19.

But before you assume that you — or your aging parent — will be 95% protected by vaccine trial data: it’s extremely important to take a good look at the study data, to find out: how many people like you were studied, and what were the results in that group?

Being a geriatrician, I always want to know how many older adults were included in a study, what was the age breakdown of older participants (because the average 65-year-old is medically fairly different from the average 85-year-old), and what happened with those participants.

Here is the short video presentation I recorded in December 2020, about how I assess whether the COVID vaccine (or other treatment) is effective in older adults, especially those over age 85 and those in nursing homes. I also have summarized some key vaccine information below.

In this video, I review the data for Pfizer’s vaccine, and I show you how you can assess the data on older adults when the data for upcoming vaccines is released.

(For a short tutorial on how to slow down the video or search the transcript, see here.)

Here’s what I found out, for the Pfizer trial:

  • The median age of participants was 52 years, and 42% of participants were older than 55 years of age. The age range of participants was 16-91.
  • COVID cases and vaccine efficacy results are reported for four age ranges (see Table 3):
    • 16-55 years (19852 people) –> 5 cases (vaccine) vs 114 cases (placebo) –> 95.6% efficacy (statistically likely range: 89.4–98.6%)
    • >55 years (15043 people) –> 3 cases (vaccine) vs 48 (placebo) –> 93.7% (statistically likely range: 80.6–98.8%)
    • >65 years (7728 people) –> 1 case (vaccine) vs 19 (placebo) –> 94.7% efficacy (statistically likely range: 66.7–99.9)
    • >75 years (1559 people) –> zero cases (vaccine) vs 5 cases (placebo) –> 100.0% efficacy (statistically significant range: −13.1–100.0%)

Please note that it’s not a typo: for participants aged 75 years or older, the initial Pfizer trial data reported a statistically likely efficacy range of negative 13% to 100%. (!)

Why is this? In practical terms, they didn’t have enough people aged 75+ catch COVID during the study period. (This may be because everyone in this age group was being careful to minimize their COVID exposure.)

In short, when Pfizer’s vaccine was authorized, it wasn’t clear just how effective it was in older adults aged 75+, much less those aged 85-90+. They also didn’t report just how many people aged 85+ were in the study, but probably it was a small number.

As a geriatrician, this concerned me. Most vaccines, such as the influenza vaccine, tend to work less well in older adults because of an aging immune system. (This is why vaccine makers have designed flu vaccines specifically for older adults.)

That said, in February 2021, researchers published a study of the Pfizer vaccine efficacy under real-world conditions in Israel, which noted a real-world vaccine efficacy of over 90%. The study did exclude nursing home residents from the study, and did not specify effectiveness in people over age 80. But it was excellent to see the vaccine demonstrating such good results overall.

Also, as noted earlier in this article, in May 2021, researchers published an updated study of the Pfizer vaccine efficacy in Israel, which reported vaccine efficacy in 3 older age groups (over 65, over 75, and over 85).

This data found that vaccine efficacy dropped in the older age groups for asymptomatic infection (83% in people over age 85) but remained around 97% for symptomatic COVID and severe COVID, with no drop seen in the older age groups. This suggests that although the risk of passing on COVID or having a breakthrough infection may go up as people get older, even those over age 85 should expect to get excellent vaccine protection from serious COVID illness.

For the most recent information on what data from Israel shows (including why they decided to give boosters), see my latest video update.

What about the efficacy of the Moderna vaccine?

The Moderna phase 3 trial data was overall similar to the Pfizer data. They also had a limited number of participants over age 75, and so could not draw statistically significant conclusions regarding the efficacy of the vaccine in people over age 75.  The peer-reviewed Moderna vaccine study results published in the New England Journal are here.

The data that Moderna submitted to the FDA when requesting emergency approval can be viewed here.

  • In Table 17 (page 29), you can see that in people aged 65+, the point estimate for vaccine efficacy was 86.4% (95% likely range of 61.4 – 95.5%), compared to an efficacy of 95.6% (range 90.6%, 97.9%) in people age 18 to under 65.
    • This is overall excellent vaccine efficacy.
  • You can see the number of participants aged 75+ and the vaccine efficacy results in Table 10 (page 24).
    • The number of people over age 75 was quite small (about 1300 overall) and there were only 3 COVID cases in the vaccinated group.
    • So the posted efficacy rate of 100% is not statistically significant (which is why they don’t provide a range).

Needless to say, the participants in the vaccine trials who were aged 75+ are overall much younger and healthier than people in nursing homes, and should be assumed to have a better immune system response to vaccines than even a healthy 90 year old will have.

If you are wondering why there weren’t more people aged 75+ in the trials, see this interview with geriatrician Dr. Sharon Inouye, of Harvard: Why Aren’t Highest-Risk People Better Represented in COVID Vaccine Trials?

When the Pfizer and Moderna vaccine were released, my concern was that the biggest risk in vaccinating frail older adults is that people may overestimate the associated protection and then take fewer precautions around these older adults. So even if all residents of a nursing home are vaccinated, it’s important for staff to be vaccinated as well, and that everyone continues to take precautions until the levels of COVID community transmission finally drop down.

For the latest information on the efficacy of the Moderna vaccine (which in many studies appears to be more effective than the Pfizer vaccine), see my latest video update above.

Do the Pfizer and Moderna vaccines protect against the new variants of COVID?

The CDC is monitoring several COVID variants, some of which appear to be more contagious than usual. These seem to have originated overseas but appear to be circulating in the United States. The variants include:

  • Alpha, (B.1.1.7, first identified in the U.K.)
  • Beta (B.1.351, first identified in South Africa)
  • Gamma (P.1., first identified in Brazil)
  • Delta (B.1.617, first identified in India) — As of October, 2021, this has proven to be extremely transmissible . It was implicated in a breakthrough cluster of cases among vaccinated airport workers in Singapore and has become the dominant COVID variant in many parts of the world.
  • Omicron (B.1.1.529, first identified in South Africa) — This one has an exceptional number of mutations and as of Dec 2021, seems to be rapidly spreading.

The vaccine makers are actively studying how well their vaccines protect again these variants. In July 2021, a study published in the New England Journal of Medicine concluded that the Pfizer vaccine and AstraZeneca vaccines were effective against the Delta variant, provided two doses were administered.

To date, no COVID boosters have been designed specifically for any COVID variants, but it is possible that this will be developed in the future.

To find out if the COVID variants are causing cases near you, see this CDC page: US COVID-19 Cases Caused by Variants.

Are the Pfizer and Moderna COVID vaccines safe?

In general, they appear to be quite safe and there were very few true severe problems noted in the study.

As of March 26, 2021, over 130 million doses of these vaccines have been administered. To date, the primary safety issue that has emerged is the possibility of severe allergic reactions. However, these are uncommon and only affect a handful of people per every million doses administered. For more on this, see this CDC page.

Now, it’s important to note that it was quite common for vaccine recipients to feel unwell after vaccination, especially after the second dose. The most common symptoms were fatigue and headache, and some people experienced fever, as well.

These are signs that the immune system is responding to the vaccine! (Which is why they occurred less often in older participants than younger ones.) So these should not be taken as a sign that the vaccine is dangerous, or not worthwhile.

About the Johnson & Johnson COVID Vaccine

The Johnson & Johnson vaccine requires only a single injection. A good summary of the J&J vaccine, including how it’s different from the Pfizer and Moderna vaccines, is here: How does the Johnson & Johnson vaccine work? When is it available? What to know about the new shot.

Reviewing the J&J vaccine data is more complicated in that the Phase 3 trial was conducted in three regions (the US, South Africa, and 6 Latin American countries), and also took place in the winter of 2020-2021, when some areas had COVID variants spreading.

The trial data submitted to the FDA can be viewed here:  FDA Briefing Document: Janssen Ad26.COV2.S Vaccine for the Prevention of COVID-19.

In reviewing the J&J data, I noted:

  • Vaccine effectiveness (VE) overall, by region was:
    • US: 72% (95% confidence interval 58-82%)
    • Latin America 61% (95% confidence interval 47-72%)
    • South Africa 64% (95% confidence interval 41-79%)
  • 35% of participants were over age 60
    • 3.7% over age 75
  • VE after 28 days against moderate-severe COVID:
    • Age 18-59: 66% (95% CI 53-76%); 64% if comorbidities
    • Age 60+: 66% (95% CI 37-83%); 42% if comorbidities
  • VE after 28 days against hospitalization/ICU/death
    • No cases were noted among vaccine recipients; VE 100% (31-100%)

The bottom line is that although the posted overall efficacy rate appears to be lower (72% in the US) than that of the mRNA vaccines, the J&J vaccine is still quite effective overall and after 28 days, it had good efficacy (83%; see table 16) in preventing severe/critical COVID.

It is perhaps a little bit concerning that it was less effective among older adults with comorbidities, but it is still better than being unvaccinated.

There was no very detailed data on the vaccine efficacy in people over age 75; they are mentioned in some results tables (e.g. table 12) but there does not seem to be enough data to draw an efficacy conclusion.

The vaccine also appeared to be safe overall. Similar to the previously approved COVID vaccines, many vaccine recipients did experience side effects such as headache, fatigue, and body aches, and these were more common in younger recipients.

There has been some concern about a rare but serious side effect involving clots: as of December 17, 2021, 57 people have experienced clots associated with the J&J vaccine. These all occurred in people under the age of 59. Given 16 million doses have been administered, this appears to be a very rare side-effect.

Although it is better to be vaccinated with J&J than to be unvaccinated, as of December 2021, it has become clear that the Pfizer and Moderna vaccines are more effective, and potentially safer. For these reasons, on December 16, the CDC announced that the mRNA vaccines are now preferred over J&J.

COVID Vaccination and Nursing Homes:

CDC data indicates that since vaccinations began in nursing homes in December 2020, COVID case rates and death rates have fallen dramatically in nursing home residents and among people aged 85+. A UK study also noted a significant drop in COVID hospitalizations after their vaccine rollout.

You can view current counts for COVID cases and COVID deaths in nursing homes here:
CDC: Nursing Home Covid-19 Data Dashboard

The numbers have improved a lot since the winter of 2020-2021. However, in December 2021, there were still 4000 cases per week in nursing homes nationwide, along with nearly 400 deaths per week.

Past investigations suggest that some nursing homes are experiencing outbreaks related to unvaccinated staff members, and “breakthrough” COVID cases in vaccinated residents are occurring. Most of these breakthrough cases are mild or asymptomatic, fortunately.

To date, vaccination rates are much higher among nursing home residents than among the staff who work in the facilities.

The CDC’s Advisory Committee on Immunization Practices (ACIP) reviewed COVID vaccine safety data in a meeting on January 27, 2021.  You can view the meeting slides and safety data here. This meeting included data on the immunization of nursing home residents (slides 39-41). These vaccinations used Pfizer and Moderna vaccines.

The safety data, for nursing home residents, were reassuring. As the slides explained, after the vaccination campaign in nursing homes, there was no sign that people were more likely to die within after vaccination, compared to nursing home residents who are not vaccinated.

Especially given the risk of COVID exposure due to those staff members who have chosen to not be vaccinated, I highly recommend COVID vaccination for all nursing home residents. I also recommend vaccination for visiting family members, as this helps protect nursing home residents, who may be more vulnerable to breakthrough COVID cases after vaccination.

I also recommend a booster dose for older adults and especially for nursing home residents, since recently published CDC data finds that the mRNA vaccines efficacy against COVID infection has dropped over the past few months:
Effectiveness of Pfizer-BioNTech and Moderna Vaccines in Preventing SARS-CoV-2 Infection Among Nursing Home Residents Before and During Widespread Circulation of the SARS-CoV-2 B.1.617.2 (Delta) Variant — National Healthcare Safety Network, March 1–August 1, 2021.

Who shouldn’t be vaccinated against COVID?

At this time, there are not many specifics on who should not be vaccinated, provided a vaccine is approved for your age group. (None of the available vaccines have an emergency authorization for children under the age of 5.)

As of December 2021, there have been a relatively small number of severe allergic reactions, which the FDA is investigating. So people with a history of anaphylactic allergic reactions should probably check with their health providers before pursuing vaccination. There have also been some very rare cases (28 out of 9 million doses given) of serious clots in people who receive the Johnson and Johnson vaccine, as noted above.

That said, with millions of vaccine doses being distributed over the next several months, guidelines are likely to rapidly evolve, regarding who should not be vaccinated, or who should be vaccinated with caution. For accurate information on this topic, I recommend reputable information sources, such as the FDA and the CDC’s COVID information pages. (See Resources, below.)

My current recommendation for COVID vaccination

As of December 17, 2021, I am urging all adults to get vaccinated for COVID, unless your own health provider advises you otherwise. Although any vaccine is better than no vaccine, the mRNA vaccines have proven to be more effective than Johnson & Johnson, so I would recommend one of those. There is also evidence that the Moderna vaccine is a little “stronger” and more effective, which can be good for aging immune systems.

I recommend vaccination against COVID because:

  • The Pfizer and Moderna vaccines appear to be quite effective in preventing hospitalization, even in older adults.
    • See my December 2021 video update in which I walk through the CDC data showing how COVID cases, hospitalization, and deaths are much higher in unvaccinated people, especially in older age groups
    • Data from Israel suggests good effectiveness in people over age 85, as well. Although there does seem to be some recent waning of vaccine protection against breakthrough infections (esp in older adults), vaccine protection against hospitalization remains quite good.
  • Even though it’s unclear exactly how effective these vaccines are in people over age 75, COVID case numbers and deaths in this age group have fallen as older adults have been vaccinated.
  • So far there is no reason to believe these vaccines are unsafe or likely to cause lasting harm.
  • Until COVID rates drop way, way, down, the risks of catching and transmitting COVID should vastly outweigh the potential discomfort of vaccination or very small risk of an adverse reaction.

I also recommend that previously vaccinated older adults get a booster COVID vaccine dose. Younger adults should get a booster as well, as it’s now recommended for all adults and helps reduce transmission to older adults and other vulnerable people.

What is an older person’s risk of dying from COVID?

To get an estimated answer to this question, in March 2021, queried the CDC’s COVID-19 Case Surveillance Public Use Data set, which is available online.

In reviewing available data for COVID cases from 9/1/20 to 3/25/21, I calculated the following:

  • For people aged 80+
    • 16.4% mortality overall
    • 43% mortality if hospitalized
    • 67% mortality if admitted to the ICU
  • For ages 70-79
    • 6% mortality
  • For ages 60-69
    • 2% mortality

Note that these figures are pre-Delta. The Delta variant does seem to cause more severe illness, so the risk of serious COVID illness in the unvaccinated is probably higher now.

For a more recent estimate of COVID mortality, see this part of my December 2021 COVID update.

What to remember if you — or your loved one — is over age 75:

I strongly urge you to get vaccinated! Moderna is likely better for older adults, but Pfizer is good too. Studies are finding that both mRNA vaccines offer superior protection compared to the Johnson & Johnson vaccine, and so I would recommend getting an mRNA two-dose vaccine if at all possible.

I also recommend that previously vaccinated older adults get a booster COVID vaccine dose. This will hopefully help reduce the chance of catching Omicron.

Please note that vaccination will make you much safer from COVID, but it often does not make you 95% safer and I especially urge caution for those who are frail, immuno-compromised, or over age 85.

Although most breakthough COVID infections in older adults are not severe, some are. Most deaths due to breakthrough COVID infections have been in people over age 65. It is hoped that boosters will reduce serious COVID breakthroughs in older adults.

There continues to be relatively little research published on vaccine efficacy in people over 85, which makes it challenging to know just how effective these vaccines are for our most vulnerable older adults. That said, the nursing home outbreaks we’ve had since residents were vaccinated show that although breakthrough infections can definitely happen, vaccinated nursing home residents are MUCH less likely to die of COVID.

COVID is also mutating and although so far the current vaccines appear protective against variants, that could change.

So I recommend erring on the side of taking precautions, such as being careful about crowded indoor spaces, especially if COVID cases are going up in your community.

Outdoor activity is in general low-risk for COVID exposure and transmission, and I believe that in most cases, it shouldn’t be necessary to wear a mask while outdoors.

You can find the CDC latest recommendations for fully vaccinated people here: CDC: When You’ve Been Fully Vaccinated

We can also protect nursing home residents and other vulnerable older adults by encouraging all younger adults around them to accept vaccination.

Please take care, stay safe, and I hope you’ll get vaccinated once it’s available to you! 

And if it’s been more than six months since you were vaccinated please get a COVID booster soon!

You can view my past COVID vaccine video updates here: Oct 2021, Sept 2021, July 2021, May 2021, March 2021, Dec 2020.

For 2022, I’ll be posting updates to a new page, which is here:  COVID & Aging Adults: 2022 Updates

Resources:

This article was first published on Dec 18, 2020, and was last updated by Dr. Kernisan on December 17, 2021.

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Comments

  1. I have a question. Is it recommended that someone over 75 who has had the two Pfizer vaccinations and is planning to get a booster seek to have a Moderna booster, in the light of Dr. Kernisan’s comment about the two in the youtube video?

    • Hi Robert.

      I agree that the data about the efficacy of the Moderna vaccine is encouraging, but I don’t think there’s enough data right now to recommend waiting for a Moderna booster, which may be available a little later than the Pfizer one.

      So if you or a family member need a booster shot and the Pfizer one is available, it isn’t recommended to wait for a Moderna shot.

  2. I note very little being addressed regarding natural immunity post-covid infection either in your article, the CDC, NIH, and WHO…specifically concerning those of us in the “aging-health community”. I am 6-months out from a definite covid infection, live on my own with little, if any residual effects of that infection. Other than being well over 75, female, I have no underlying co-morbidities. I have recently had both qualitative and quantitative lab studies done that show natural infection with SARS-cov-2. I am EXTREMELY hesitant to have any of the “vaccines” for Covid given their politicization and low track record for any age group. Nor are we being advised of reported adverse reactions (how many are NOT being reported). VAERS does have those reported numbers but the public is not being given the information that that information IS out there. Informed consent? Not really!! I am not truly an anti-vaxxer but have had many negative reactions to “required” vaccinations in the past. SO I am basically UNvaccinated for several major diseases, polio aside. So now what…

    • I’m so glad to hear that your COVID infection has resolved with few to no residual effects. I can understand questioning if you need a vaccine after you’ve recovered from COVID, and many people have this query.

      You’re correct that having had COVID confers natural immunity, although it’s not clear what the duration of that immunity will be. In addition, there’s some evidence that those who have had COVID and don’t get vaccinated may be more likely to get it again. You can check out that study here. I think the track record of the vaccines for preventing serious illness and hospitalization from COVID is good, as Dr. K pointed out in her article, and I do recommend it for almost all of my patients, whether they’ve had COVID or not.

      Having had a serious reaction to a prior vaccine could be a reason to not get vaccinated for COVID, and then of course, it’s important to consider what the infection rates are in a person’s geographic area, whether the person has contact with unvaccinated or vulnerable individuals, and what other health issues they may have.

      We all have to make a decision about vaccination based on our local scenario, values and health issues, and with the best information we can find. I get that there are unanswered questions that make some of the choices difficult, and I hope you can do what’s best for you in collaboration with your health care team.

  3. Dr. Leslie,
    Thank you so much for the updated video commentary dated 9/9/2021; great info! We appreciate you keeping us informed and sharing with us what is important to know! You are awesome! Take care.

  4. I am one of those who probably should get a booster. Pfizer vaccine in January and February 2021. 85 years old in good health except for diagnosis of rheumatoid arthritis in October 2020. Symptoms well controlled with Methotrexate symptoms (6 x 2.5mg weekly) and Hydroxychloroquine (1 x 200mg/daily). I believe that these medications affect the immune system in ways that make me “immunocompromised”. Do these medications suppress T cells? B cells? Other components of the immune system? What is known or thought about the effects of such medications on the immune response to vaccines. And would there be any benefit (in terms of response to the vaccine) to temporarily suspending taking such medications?

    • Methotrexate is used in the treatment of various conditions, including rheumatoid arthritis, psoriasis and after an organ transplant. It acts by affecting folate metabolism, which inhibits DNA synthesis, repair, and cellular replication.

      Hydroxychloroquine is used as a treatment for malaria, but also for lupus and other autoimmune conditions. It affects the movement of white blood ceils, and interferes with the complement system (another part of the immune system).

      Neither medication has a specific effect on T or B cells, but they can reduce vaccine efficacy, and are considered immunosuppressants.

      It’s likely that a person on immunosuppressant drugs would be a good candidate for a booster shot, at least according to current CDC information.

      Whether or not to stop a certain medication to increase the chance that a vaccine is effective is an individual decision, best made with a doctor who knows the whole medical history. It may be that the risk of getting a flare of arthritis outweighs that benefit of enhanced vaccine efficacy. Stay tuned as we get clearer guidance on boosters.

  5. Thank you for spreading more fear with this article. Dr Fauci, several years ago, stated masks do not work as particles are too small when it comes to Covid virus.
    Also, you presented no alternative facts regarding Covid and survival rates. I assume you must be paid off in some capacity to write such a lopsided article.
    This is no longer conspiracy junk. This is real life and the perpetuation of fear. CDC has said the survival rate, over all age groups, is 99% give or take. Obviously if you are compromised or unhealthy , it affects you differently.
    The vaccines have side effects known about and published by the FDA in 2020. Also, you should let people know the dangers of Remdisivir. That is the drug of death for people. People died in hospitals because of Remdisivir…. read side effects. As well, Remdisivir is not approved for Covid treatment by FDA, in is an investigational drug. But I digress.
    Please stopping telling elderly to go get shot. I have two, 98 and 99, grandparents. They had the shot and both went to the hospital after them. One had fluid on the heart, no sign of it before, as well as a couple other issues. Now she weighs herself daily to make sure she isn’t 2.5 pounds heavier. She is also on new medication to control these new issues. The other had onset of heart problems and problems breathing. But, there doctors told them to get the shot. Stop with the madness. VEARS is full of side effects. Death is occurring. Quit pushing this on the elderly!

    • Your points are ones that I hear from some of my patients and neighbours, and I certainly respect that there are opposing views regarding COVID infection, treatment, and vaccination.

      I disagree that Dr. Kernisan is “pushing” any recommendations, and I can attest that she is absolutely not “paid off” to share any particular point of view. The article and video clearly reference sources that are widely considered to be evidence based and as free from bias as possible, including original research papers when those are available.

      I’m so sorry that your grandparents were ill, and I hope they’re doing better. It can be very difficult to sort out the cause of health issues, and sometimes there can be a temporal relationship with an event like a vaccine, so I can understand assuming that the vaccine caused the illness. I feel reassured that vaccine adverse event data is being gathered so that we can get long-term information about the safety of the vaccines. Having a family member get ill after a vaccination is tragic, but the data seems to point to overall safety and benefit, even in the very old.

      Thanks for taking the time to leave a comment and share your perspective.

  6. Very informative and helpful. Dr K addresses the different mRNA vaccines, but what are thoughts regarding getting Moderna “booster” after initial Phizer 2 dose series?

    • That’s a good question and one that’s still being mulled by experts in the field of COVID vaccine research. It appears that it will most likely be acceptable, maybe even preferable to have the Moderna shot after a Pfizer series, as they are both mRNA vaccines.

      Sorry I don’t have a more up to date answer, but stay tuned to Better Health While Aging as we get more information.

  7. Many are jumping the line and getting Covid boosters now – ahead of the proposed 9/20 beginning of the booster program. For healthy seniors over 75, such as myself, who received Moderna in Jan and Feb 2021, do you recommend waiting until 8 months (Oct) after 2nd shot, or is it advisable to get the 3rd shot ASAP, especially in an area where cases and transmissions are very high? Thank you!

    • That’s a great question! The latest info seems to be that booster shots are a way to enhance protection from coronavirus, and it’s expected that the roll out of booster shots will be prioritized to those at highest risk (such as long-term care home residents and the oldest adults).

      Waiting until October might be ethically right – it will allow access to those who are at higher risk in the case of a limited vaccine supply. It might also mean that if a newly engineered vaccine becomes available (for example one that’s more tailored to delta or another new variant of concern), it might be worth waiting for.

      Things are continuing to change rapidly in this COVID world, so I would advise my patients to get a booster dose as soon as they can, according to their regional public health guidelines. Checking in with your primary care provider is a good idea too, and they’ll probably have a sense of what’s best in your region.

      In the meantime, don’t let up on handwashing and following other infection control practices, and try to get enough sleep, good nutrition, and regular exercise.

  8. Thanks for the professional information. I have a question. From browsing the Internet I learned that T cells are “aging” too etc. The efficiansy of the “protecting shield” weakens as we grow older. So is the third jab of Pfiser may strengthen the immunity system?
    Thank you

    • T cells are a type of lymphocyte – a white blood cell that helps the immune system to function correctly. T cell numbers stay about the same with age, but in older adults, T cell function can be less efficient than in younger people.

      Vaccines don’t “strengthen” the immune system, but they use the immune system machinery to provide protection against getting an infection, or a more severe form of illness from an infection, as in the case of a COVID vaccine booster.

      I would think of the booster shot as boosting a person’s prior vaccine efficacy, rather than boosting the immune system. In fact, a stronger immune system could be hazardous to your health (for example, causing autoimmune disease). We want to optimize (not boost) our immune systems through healthy eating exercise, and stress reduction.

      Thanks for taking the time to comment and for following the COVID news.

  9. Thank you so much for continuing to keep us “oldsters” informed! The data from the CDC and the media is so confusing!
    I had both Moderna shots (back in January and February) and am now worried about what I should do about breakthrough cases and booster shots. I have fibromyalgia and have never been able to figure out if I’m “immunocompromised”. I do know, from following hundreds of comments on the National Fibromyalgia Association website, that many, many fibromites had bad side effects from the shots, even after four weeks. Me, too.
    Thanks again for your insightful information.

    • I’m sorry to hear that you had side effects from the vaccine, and I understand that it’s information overload out there about COVID, and I get it about breakthrough cases and boosters.

      I think Dr. K’s podcasts are excellent, evidence-based and timely updates about the latest COIVD news, and are a great resource. Talking to your own health care providers about what to do is important as well.

      Thanks so much for taking the time to comment, and I hope you’ll be able to find the answers you need when you need them.

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