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Unvaccinated people were 11 times more likely to die from COVID-19[female[feminine compared to those who were fully vaccinated, the Centers for Disease Control and Prevention reported on Friday in a new study, providing more evidence of the effectiveness of vaccines in preventing serious illness, even though protection against breakthrough cases benign seems to weaken in the face of Delta variant.
“Looking at the cases over the past two months where the Delta variant was the predominant variant circulating in this country, those who were not vaccinated were about four and a half times more likely to contract COVID-19, more than 10 times more likely to be hospitalized and 11 times more likely to die from disease, ”CDC director Rochelle Walensky said during a briefing Friday.
The latest CDC data, released Friday as three studies in the agency’s weekly morbidity and mortality report, is also the latest sign that booster injections might become necessary in the next few months for many.
Looking at the incidence of COVID-19 in 13 jurisdictions in the United States, the CDC reported that the chances of fully vaccinated people getting sick with the virus increased as the Delta variant increased across the country.
Scientists expected that fully vaccinated people would account for about 10% of cases from late June to July, if the injections remained at their maximum effectiveness in preventing any infection. Instead, those vaccinated accounted for 18% of observed cases – a finding according to the study’s authors “consistent with a potential decline in vaccine protection against confirmed SARS-CoV-2 infection.”
However, while protection against hospitalization and death remained relatively high in the study until mid-July, the CDC also released new data showing new evidence of waning protection against serious illness. among older Americans.
In data collected from the agency’s “VISION Network” cohort of hundreds of hospitals and emergency care clinics, the agency reported that the vaccine’s effectiveness against hospitalization in adults over 75 years of age. years and older “was significantly lower” than that of younger patients until August. A handful of veterans medical centers have come to a similar conclusion in their data, estimating 80% effectiveness against hospitalization for adults 65 and older.
Both studies reported that their findings on decreased efficacy against hospitalization had not previously been observed in their cohorts.
The CDC has already reported vaccine efficacy against hospitalization appearing to decline over time in other cohorts, while remaining above 80% until July.
The new findings come as federal health officials say they are moving forward with plans to roll out booster vaccines nationwide, pending Food and Drug Administration approval and recommendations. formalities from a group of CDC vaccine expert advisers.
Pfizer is expected to be the first to gain FDA approval for a recall. The regulator plans to convene its group of vaccine experts to deliberate on the company’s recall data next week, ahead of the administration’s planned deployment the week of September 20.
Federal health officials say they also hope to clear booster shots for Moderna and Johnson & Johnson vaccine recipients in the coming weeks, pending more data from drugmakers.
The Biden administration also highlighted data collected overseas to highlight the need to roll out additional doses of the vaccine to those most at risk; Israel, for example, has already started giving booster shots.
“Israel has been a very interesting phenomenon to watch, as they appear to be ahead, certainly over the United States, in all elements of the epidemic, including the response to vaccines,” said Dr.Anthony Fauci, adviser. chief medical officer of the president. virtual event organized by the London School of Hygiene and Tropical Medicine on Wednesday.
Researchers at Yale University, in a federally funded pre-publication study that has not yet been peer-reviewed, recently reported that early deployment of booster shots appeared to reduce the risk of infection up to ‘at 68%.
Israeli health officials have also informed the Biden administration of additional unpublished data from their recall program. The country’s prime minister recently urged President Biden to speed up the US recall strategy, which currently calls for Americans to receive their additional injections 8 months after completing their original regimen.
“Although previous studies have shown protection against hospitalization, the most recent studies, in my personal communication with the Israeli health authorities, indicate that there is even now a significant decrease,” added Fauci.
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