As COVID-19 cases began to accelerate again this spring, federal data suggest that the rate of innovative COVID infections in April was worse among Americans driven compared to North Americans. -Unpowered Americans, although death and hospitalization rates continued to be among the lowest.
The new data does not mean that reinforcement injections are increasing the risk in any way. Ongoing studies continue to provide solid evidence of the additional protection offered by booster injections against infection, serious illness, and death.
Instead, the change underscores the growing complexity of measuring vaccine effectiveness at this stage of the pandemic. It occurs when officials are weighing key decisions on booster injections and pandemic surveillance, including the possibility of continuing to use “gross case rates.”
It also serves to illustrate a complicated reality facing health authorities in the midst of the latest wave of COVID-19: even many driven Americans are vulnerable to catching and spreading the virus at some point. that officials are wary of re-imposing pandemic measures such as mask requirements.
“During this wave of Omicron, we are seeing an increase in the number of mild infections: types of infections at home, the inconveniences, having a cold, being out of work, not great, but not the end of the world. And that’s because these Omicron Variants can break antibody protection and cause these mild infections, “John Moore, a professor of microbiology and immunology at Weill Cornell Medical College, told CBS News.
“So one of the dynamics here is that people feel, after vaccination and augmentation, that they are more protected than they really are, so they increase their risks,” he said. “This, I think, is the main driver of these statistics.”
In the CDC’s dashboard, which is updated monthly, the agency acknowledges that several “factors that are likely to affect gross case rates due to vaccination status and booster dose, making it difficult to interpret recent trends.” .
The story goes on
The CDC had launched the page a few months ago, amid demands for better federal monitoring of innovative cases. It has now grown to include data from COVID-19 immunization records and positive tests from 30 health departments across the country.
During the week of April 23, he said the rate of COVID-19 infections among Americans increased was 119 cases per 100,000 people. This was more than double the rate of infections in those who were vaccinated but not increased, but a fraction of the levels among unvaccinated Americans.
This could be because there is a “higher prevalence of previous infection” right now among those who are not vaccinated and unvaccinated, the CDC said. It is possible that more driven Americans have now abandoned “prevention behaviors” such as wearing masks, causing an increase.
Some driven Americans may be looking for a lab test for COVID-19, rather than relying on quick, over-the-counter tests that are largely not reported to health authorities.
“Testing at home has become, I think, the main concern of developed countries that may interfere with our measures,” Ruth Link-Gelles of CDC told a conference hosted by the National Infectious Diseases Foundation last month. .
Some federal officials have raised the possibility of adopting a survey, similar to the one on which the UK authorities are based, as an alternative way of tracing a “basic truth” in COVID-19 cases, although plans to defend this system does not seem imminent.
“Beyond this crisis, I think the future lies in random sampling. And this is an area we’re watching closely,” said Caitlin Rivers, a senior official on the agency’s disease prevention team. , in an event organized by the National Academies. last week.
Meanwhile, federal officials are also preparing to make key decisions about future COVID-19 vaccinations, which could increase the chances that additional vaccinations could prevent infections of the latest variants.
In the short term, CDC director Dr. Rochelle Walensky recently told reporters that her agency was in talks with the Food and Drug Administration to expand the second reinforcement option to more adults.
Right now, only adults 50 and older and some immunocompromised Americans are eligible for a fourth dose.
The next generation of vaccines and reinforcements
Later, a group of external vaccine advisers from the Food and Drug Administration is scheduled to meet later this month to assess data from new booster candidates produced by Pfizer and BioNTech, as well as Moderna. .
BioNTech executives told investors last month that regulators had asked to see data from both injections tailored specifically to the Omicron variant, as well as “bivalent vaccines,” which target a combination of mutations. .
Those new vaccines would take about three months to make, White House COVID-19 official Dr. Ashish Jha told reporters.
“This is a bit of a challenge because we don’t know how far the virus will evolve in the coming months, but we have no choice but to produce the hundreds of millions of doses that need to be available. For a booster campaign, we have to start at risk in early July or even a little earlier, “said Dr. Peter Marks, the top FDA vaccine official, at a recent webinar organized by the American Medical Association.
Marks said it seemed likely that bivalent traits would be favored, given the “motion sailor” it could offer for unforeseen variants beyond Omicron.
Marks warned that vaccines that could offer even better “mucosal immunity” – actually fighting the virus where it first infects the respiratory system – are still a long way off.
“I think we are in a time of transition and again I will speak openly about the fact that 2022 to 2023 is a year where we need to plan to try to minimize the effect of COVID-19 with the tools at hand.” said Marks at a recent event with the National Foundation for Infectious Diseases.
“I think, potentially for the 2023-2024 season, we will start seeing second-generation SARS-CoV-2 vaccines,” he later added.
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