Yes, COVID-19 remains significantly more dangerous for people over 65 than for younger adults. While widespread immunity from vaccines and prior infections has lowered overall death rates since the pandemic’s peak, age is still the single strongest predictor of a severe outcome. Adults over 65 account for the vast majority of COVID-19 hospitalizations and deaths, and people in this age group who are hospitalized with COVID are three to four times more likely to die than those hospitalized with seasonal flu.
How Much Riskier Is COVID for Older Adults?
The gap between older and younger adults is not small. CDC data from before vaccines were available showed that among people aged 75 to 84 who tested positive, about 35% were hospitalized and 14% died. For those over 85, the fatality rate reached nearly 28%. Compare that to adults aged 25 to 34, where the fatality rate was 0.08%, or adults 45 to 54, where it was 0.6%. In other words, a positive COVID case in someone over 85 was roughly 350 times more likely to be fatal than in a young adult.
Vaccines and treatments have reduced these absolute numbers considerably, but the relative gap between age groups persists. Older adults still make up a disproportionate share of severe cases during every new wave.
Why Aging Makes the Immune Response Weaker
Two biological processes work against older adults. The first is immunosenescence: the immune system gradually loses its ability to fight new infections with age. T cells, which are critical for clearing viruses from the body, become less effective and more prone to exhaustion. Older adults produce fewer naive T cells (the ones that learn to recognize a new threat), and their existing immune cells respond more slowly to signals that a virus has entered the body. The result is a delayed first line of defense, giving the virus more time to spread through the lungs and other organs.
The second process is sometimes called “inflamm-aging.” As people get older, their bodies maintain a low-level state of chronic inflammation even when no infection is present. This background inflammation interferes with the immune system’s signaling pathways, leaving immune cells in a state of high baseline activation but poor responsiveness when they actually need to fight something off. It also worsens existing chronic diseases, creating a cycle where the body is both inflamed and unable to mount an effective defense.
Chronic Conditions That Compound the Risk
Age alone raises the risk, but pre-existing health conditions push it higher. The CDC identifies obesity, diabetes with complications, and anxiety and fear-related disorders as having the strongest association with COVID-19 death. Cancer and asthma also increase the likelihood of severe illness. Since many of these conditions are more common in older adults, the risks stack on top of each other. A 78-year-old with diabetes and obesity faces a substantially different prognosis than a healthy 78-year-old, and both face more danger than a 40-year-old with the same conditions.
COVID Symptoms Can Look Different in Older Adults
One of the most important things to know is that COVID often doesn’t look like a typical respiratory illness in older people. About 40% of older adults in one community study presented with atypical symptoms: falls, reduced mobility, or delirium rather than cough and fever. In hospital settings, more than half of older COVID patients had no respiratory symptoms at the time of admission.
Delirium, meaning sudden confusion, disorientation, or behavioral changes, was the most common atypical presentation, appearing in roughly 37% of older adults across multiple studies. Loss of appetite affected about 27%, and falls occurred in about 17%. Other presentations included lethargy, drowsiness, dizziness, and difficulty walking. These symptoms overlap with many other conditions common in aging, which means COVID infections in older adults can go unrecognized or be mistakenly attributed to something else, delaying treatment.
Long COVID Hits Older Adults Harder
Surviving the initial infection doesn’t end the risk. Older adults are generally at higher risk of developing long COVID than younger people. A large U.S. retrospective study found that adults over 65 had significantly increased rates of respiratory failure, fatigue, high blood pressure, memory difficulties, kidney injury, mental health problems, blood clotting disorders, and irregular heartbeats in the months following their infection, compared to historical baselines.
The most common persistent symptoms in older adults include fatigue, shortness of breath, joint pain, cough, headache, and loss of smell. Sleep disorders, anxiety, depression, and cognitive dysfunction have also been documented in Italian studies of older post-COVID patients. What makes long COVID particularly tricky in this age group is that many of these symptoms, like fatigue, memory problems, or joint pain, overlap with normal aging or existing chronic diseases. This makes it harder to identify, harder to treat, and easier to dismiss.
Vaccination Remains the Best Protection
The CDC’s Advisory Committee on Immunization Practices recommends that all adults aged 65 and older receive two doses of the current 2024-2025 COVID-19 vaccine, spaced about six months apart (with a minimum interval of two months). This is more than what’s recommended for younger, healthy adults, reflecting the fact that older immune systems need the additional boost. Previously unvaccinated seniors choosing the Novavax option need three total doses.
Staying current with updated vaccines matters because protection wanes faster in older adults than in younger people, a direct consequence of immunosenescence. Each updated vaccine is also reformulated to better match circulating variants, so a dose from a previous year provides less protection against current strains.
How COVID Compares to the Flu for Seniors
A common question is whether COVID has become “just like the flu” for older adults. The data says no. Among hospitalized patients over 65, the risk of dying from COVID remains three to four times higher than the risk of dying from influenza. Both viruses are serious threats to older adults, but COVID continues to carry a meaningfully higher fatality rate in this age group, even in the current era of vaccines and treatments.