Unvaccinated Americans 11 times more likely to die from COVID, CDC reports
A day after President Biden issued a broad vaccine mandate aimed at motivating American workers to vaccinate against the coronavirus, federal health officials released a handful of studies that showed infections, hospitalizations and deaths. How effective are the shots at preventing – even the highly contagious delta variant. is dominating.
Three studies, drawing data from different US regions, evaluated the protective power of vaccines. One looked at more than 600,000 virus cases in 13 states, representing nearly a quarter of the US population, between April and July, and concluded that individuals who were not fully vaccinated were more likely to be vaccinated. were more vulnerable to infection and death from the virus.
The study found that compared to vaccinated individuals they were 4.5 times more likely to be infected, 10 times more likely to be hospitalized and 11 times more likely to die from the coronavirus.
The vaccine’s protection against hospitalization and death remained strong even when the delta variant was the dominant form of infection. But the effectiveness of vaccines in preventing infection fell from 91 percent to 78 percent, the study found.
The studies underscore a series of similar findings in recent weeks.
“As we’ve shown, study after study, vaccination works,” said Dr., director of the Centers for Disease Control and Prevention at a White House COVID briefing on Friday. Rochelle Valensky said.
As more and more Americans get vaccinated, experts always expected that immunized people would represent a greater percentage of hospitalized patients. Dr. Valensky said, “What I want to reiterate here is that more than 90 percent of the people who stay in the hospital are not vaccinated.”
“We still have more than 10 times the number of people in hospital who haven’t been vaccinated,” he said.
Two other studies published Friday found a lack of protection from vaccines in older adults.
A study conducted at five Veterans Affairs Medical Centers found that hospitalization protection dropped with age to 80 percent for people 66 and older, versus 95 for adults ages 18 to 64. percentage was less. A second study found that the effectiveness of the vaccine decreased. age 75.
The findings may help identify populations that may require additional doses or booster shots. In August, the Food and Drug Administration authorized a third dose of Pfizer-BioNtech and Moderna’s coronavirus vaccines for some people with weakened immune systems, including organ transplant patients.
But officials have said there is insufficient data on whether the effectiveness of vaccines decreases over time to recommend boosters for healthy adults.
The data also suggest that the Moderna vaccine may be slightly more effective at preventing infection and hospitalization with the delta variant than the Pfizer-BioNTech vaccine. Both mRNA vaccines had higher efficacy rates than the Johnson & Johnson shot, but the studies were not originally designed to evaluate the comparative effectiveness of different vaccinations.
In a study of 33,000 medical encounters in nine states between June and August, Moderna Vaccine’s effectiveness rate against infection was 92 percent, compared to 77 percent for the Pfizer-BioNTech shot.
Sharon Lafrenier contributed reporting from Washington.
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