About 95% of Americans ages 16 and older have coronavirus antibodies, according to CDC data from testing blood donor samples.
and COVID-19 infections, with nearly 70% of people ages 16 and up having received at least one vaccine dose, the data shows.
That may be one reason why public health officials have said BA.2, the contagious Omicron subvariant, could lead to an uptick in cases in the U.S. but not a significant surge, accordingAt the same time, antibodies don’t always indicate whether a surge will happen, the news outlet reported. In June 2021, before thebecame dominant in the U.S., about 87% of Americans had antibodies, the CDC data shows.
The data about antibodies from an earlier infection is uncertain, with protection lasting from a few months to more than a year after infection. Even then, about one-third of people who contract COVID-19 may not develop antibodies at all, according to aSo far, unvaccinated people appear to be more than twice as likely to have a reinfection, as compared with those who were vaccinated after having COVID-19, CNBC reported.
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