Nearly a quarter of U.S. adults and older teens had not been infected with COVID-19 by the end of last year, according to recent estimates from the U.S. Centers for Disease Control and Prevention (CDC).
this DiscoverBased on the final batch of results from the CDC’s nationwide antibody study of Americans 16 and older, shedding light on the extent of infection and immunity in the population.
Estimates from the CDC, which help simplify vaccine recommendations and ease COVID-19 restrictions, show that the vast majority (96.7%) of Americans age 16 and older have developed antibodies through vaccination, previous infection, or a combination of both12 moon. Of this group, 77.5 percent acquired some degree of immunity from a previous infection.
The CDC study analyzed different age groups and found that older adults (age 65 and older) had the lowest percentage of previous infections at 56.5%. In contrast, young adults and adolescents (ages 16 to 29) had the highest rates of previous infection, with 87.1% of this group having previously been infected with COVID-19.
In terms of gender and race, rates of prior infection were relatively similar between males and females and blacks and whites, ranging from 75% to 80%. However, there are also differences among other racial and ethnic groups. Asian-Americans had the least number of antibodies due to prior infection at 66.1%, while Hispanics had the highest percentage at 80.6%.
The CDC has previously published children’s estimate Data using commercial testing laboratories suggest that by December 2022, more than nine in 10 Americans under the age of 18 will experience at least one COVID-19 survivor.
Federal seroprevalence data showing the presence of antibodies in the blood can help reveal the extent of undetected or underreported virus transmission. Surprisingly, only 54.9% of adults currently believe they have ever been infected with COVID-19, according to statistics Census Bureau Survey Results Published by the Centers for Disease Control and Prevention.
It’s worth noting that having antibodies from a previous infection doesn’t guarantee protection from future COVID-19 infections, as immunity wanes over time. The greatest decline in immunity was observed in individuals who had not been both infected and vaccinated (known as “mixed” immunity).
A CDC research involves data A survey from 18 health departments showed that around 17% of hospitalized COVID-19 cases were due to reinfection by the end of last year, underscoring the importance of continued protection.
The increase in seroprevalence has also necessitated changes in the way vaccine effectiveness is measured. Ruth Link-Gales of the CDC highlighted the challenges of measuring prior infection in vaccine effectiveness studies, which suggest most Americans have previously had antibodies against the virus.
As a result, the researchers are now focusing on assessing the additional protection each year’s COVID-19 booster shot provides for everyone, regardless of their previous vaccination history. cbs news.
Published by Medicaldaily.com