Some people are worried that another Covid surge is coming, powered by omicron's highly contagious BA.2 subvariant.

But experts say a significant jump in cases is unlikely, at least for now — possibly due to a recent estimate that nearly all Americans currently have some level of Covid antibodies in their systems.

According to a Centers for Disease Control and Prevention survey of blood donor samples, conducted in December and updated last month, an estimated 95% of Americans ages 16 and older have developed identifiable Covid antibodies. Those come from both vaccinations — roughly 77% of the U.S. population has received at least one Covid vaccine dose, according to the CDC — and prior Covid infections.

That's one potential reason some experts, including White House chief medical advisor Dr. Anthony Fauci, don't expect another sharp rise in Covid cases just yet — even though BA.2 is surging across Europe, and cases of the subvariant have doubled over the last three weeks in the U.S.

https://www.cnbc.com/2022/03/29/cdc-majority-of-us-has-covid-antibodies-what-that-means-for-you.html