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Former US Secretary of State Colin Powell dies at 84, which was fully vaccinated, has shed light on how many older, immunized adults are still at risk of serious COVID-19 breakthrough infection.

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The US Centers for Disease Control and Prevention has said that vaccine success cases are expected as no vaccine is 100% effective. But health officials say the COVID-19 vaccine is still the best protection against serious illness and death from coronavirus infection.

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According to the AARP, older adults are already susceptible to COVID-19 complications Because of underlying health conditions, which affect about 80% of older Americans. Many also have less strong immune systems.

related: CDC: Hospitalization or death occurred in less than 1% of successful COVID-19 cases

As of October 12, CDC Reports of 31,895 success cases have been received Of the 24,717 people hospitalized in the US – 16,509 were 65 years of age and older. Of the 7,178 deaths – 6,104 were people 65 years of age and older.

CDC officials said several studies are underway to understand success cases and specific contributing factors such as age, underlying medical conditions, brand of vaccine and COVID-19 variants.

a September 2021 study published in “The Lancet”It also reported that older, vaccinated adults are more susceptible to severe COVID-19 breakthrough cases. Researchers studied breakthrough cases between March and July. They found the most significant cases, an average age of 80. years and had pre-existing conditions such as obesity, heart or lung disease and type 2 diabetes.

a September 2021 study published in the US National Library of Medicine also found similar results, noting that “in individuals with SARS-CoV-2 infection, increasing age is associated with a higher risk of serious illness or death.”

The AARP also reported that many older adults first received the COVID-19 vaccine and that several studies show decreased protection against the virus. Officials believe that may also play a role in the increased risk of serious infection.

related: Breakthrough COVID cases found among San Francisco hospital staff

The CDC released two studies in September that indicate a lack of safety for older adults. One examined COVID-19 hospitals in nine states over the summer and found that safety was 76% for people 75 and older, compared to 89% for all other adults. And at five Veterans Affairs Medical Centers, protection against COVID-19 hospitalizations was 95% among 18-64-year-olds 65 and older, compared with 80%.

US health officials have approved COVID-19 booster shots for certain groups, including older Americans.

Last month, Pfizer boosters began to be offered to seniors and young adults at high risk from COVID-19 because of poor health, job or living conditions – at least six months after their initial vaccination.

Last week, the US Food and Drug Administration The advisory panel recommended the same approach For half the dose of Modern Booster.

related: Moderna, J&J COVID-19 vaccines: FDA advisory panel to weigh boosters this week

Johnson & Johnson is currently seeking approval from the FDA for its booster shot as well. US health advisors expressed concern that Americans who have received the single-dose shot are not as safe as the two-dose brands.

Of the 188 million Americans fully vaccinated against COVID-19, the majority have received Pfizer or Moderna options, while J&J recipients account for only about 15 million.

The CDC concludes that those who stand to benefit from the booster have certain risks. Serious side effects from the first two doses of Pfizer are extremely rare, including heart swelling that sometimes occurs in young men. Data from Israel, which has given nearly 3 million people — mostly 60 and older — a third Pfizer dose, haven’t uncovered any red flags.

related: ‘Please do the right thing’: Biden gets COVID-19 booster shot on camera on Monday

President Joe Biden has said that if you’ve been vaccinated, “you’re in good shape and we’re doing everything we can to keep it that way, which is where the booster comes in.” 78 years old got your booster shot last month.

This story was reported from Los Angeles.