What Adults 65 and Older Should Know About the 2025–2026 COVID-19 Vaccine Update

Why COVID-19 Still Hits Older Adults Hardest

Practical takeaway: If you are 65 or older, staying up to date with COVID-19 vaccination continues to offer meaningful protection against hospitalization and death—even though protection against infection can fade over time.

Age remains the strongest risk factor for severe COVID-19. Compared with younger adults, people 65 and older are far more likely to be hospitalized, need intensive care, or die from complications of the virus. That pattern has continued through recent variant waves.

Data summarized by the Centers for Disease Control and Prevention (CDC), including analyses published in its Morbidity and Mortality Weekly Report (MMWR), consistently show that hospitalization rates are highest in older adults—especially those 75 and older and those with chronic conditions such as heart disease, lung disease, diabetes, or kidney disease.

Even in 2026, COVID-19 is not just a “bad cold” for many seniors. It can worsen underlying medical problems, increase fall risk during illness, and lead to long recoveries or long COVID symptoms.

What’s New in the 2025–2026 Vaccine Update

Each year, the Food and Drug Administration (FDA) reviews global surveillance data and recommends which viral strain the updated COVID-19 vaccines should target. For the 2025–2026 season, the authorized formulation is designed to better match currently circulating Omicron-lineage variants, based on FDA advisory review of lab and real-world data.

The goal is not to eliminate all infections. Instead, the updated vaccine is intended to strengthen protection against severe disease, hospitalization, and death—especially in higher-risk groups like older adults.

This annual update approach is similar to how influenza vaccines are selected each year, adjusting for how the virus has evolved.

CDC Recommendations for Adults 65 and Older

According to the CDC’s current “Stay Up to Date” guidance, adults 65 and older are advised to receive the 2025–2026 COVID-19 vaccine if they have not yet received it this season.

In addition, because immunity can wane more quickly in older adults, the CDC allows for additional doses in certain circumstances. Adults 65 and older may receive an extra dose at least four months after their previous updated dose, based on shared decision-making with a clinician. This flexibility reflects evidence that older immune systems often do not maintain as strong or as durable a response.

If you recently had COVID-19, the CDC says you may consider waiting about three months after infection before getting vaccinated. Waiting can modestly improve the immune response, but those at high risk or during a local surge may choose to vaccinate sooner after recovery.

The COVID-19 vaccine can be given at the same visit as flu or RSV vaccines. The CDC considers coadministration safe, although some people prefer spacing shots by a week or two to better distinguish side effects.

What the Latest Effectiveness Data Show (and Its Limits)

Recent CDC MMWR reports analyzing real-world data from hospitals and health systems show that updated COVID-19 vaccines continue to reduce the risk of hospitalization and critical illness in adults 65 and older.

These studies are observational, meaning researchers compare outcomes in vaccinated and unvaccinated groups in real-world settings. They are not randomized trials, so they can be affected by differences in health status, healthcare access, or testing behavior between groups. Even so, across multiple analyses, protection against severe outcomes has remained strongest in the first few months after vaccination.

Protection against infection is lower and declines more quickly. However, protection against hospitalization and death has remained substantially higher than in those who are not up to date—especially during variant-driven waves.

Peer-reviewed studies in journals such as the New England Journal of Medicine have also found that while antibody levels drop over months, immune memory—particularly T-cell responses—helps maintain defense against severe disease.

How Long Protection Lasts—and What We Don’t Yet Know

One of the biggest open questions is durability: how long strong protection lasts in older adults.

Evidence from prior seasons suggests that protection against hospitalization is highest in the first two to four months after vaccination and gradually declines. That pattern is more pronounced in adults over 75 and in people with weakened immune systems.

Another uncertainty is how future variants will evolve. The FDA selects strains based on the best available data, but viruses continue to change. Updated vaccines are designed to improve the match, not to provide permanent or complete immunity.

For now, the clearest evidence shows that being up to date reduces the chance of severe illness, even as infection can still occur.

Side Effects, Safety, and When to Talk to Your Doctor

Common side effects in older adults are similar to those in younger people and usually last one to three days. They may include:

Soreness, redness, or swelling at the injection site
Fatigue
Headache or muscle aches
Low-grade fever

Serious reactions are rare. People who had a severe allergic reaction to a prior dose or to a vaccine component should speak with their clinician before vaccination.

If you are frail, have multiple chronic conditions, or take immune-suppressing medications, it is reasonable to review timing and dosing with your healthcare provider. For most seniors, the benefits of vaccination outweigh the short-term discomfort of side effects.

How Medicare Covers the Vaccine

For adults 65 and older enrolled in Medicare, COVID-19 vaccines recommended by the CDC are covered under Medicare Part B.

According to Medicare.gov, there is no out-of-pocket cost for the vaccine when you receive it from a provider that accepts Medicare. That includes pharmacies, doctor’s offices, and many community clinics.

You do not need to meet a deductible, and there is no copayment for recommended COVID-19 vaccination.

Practical Steps for Seniors and Caregivers This Season

Check whether you have received the 2025–2026 updated COVID-19 vaccine.
If it has been at least four months since your last dose, ask your clinician whether an additional dose is appropriate.
Plan vaccination alongside your annual flu shot and any recommended RSV vaccination.
Test promptly if you develop symptoms such as fever, cough, or shortness of breath—early antiviral treatment works best when started quickly.
Encourage caregivers and close family members to stay up to date as well.

Bottom line: Adults 65 and older remain at the highest risk for severe COVID-19. Updated vaccines are designed to better match circulating variants and continue to provide meaningful protection against hospitalization and death, even though immunity can wane over time. Medicare covers recommended doses at no cost. A brief conversation with your clinician can help you decide the best timing for your situation.

Sources

This article is for general informational purposes only and is not medical advice. Research findings can be early, limited, or subject to change as new evidence emerges. For personal guidance, diagnosis, or treatment, consult a licensed clinician. For current outbreak or public health guidance, follow your local health department, the CDC, or another relevant public health authority.