A fast-spreading Omicron variant that causes milder illness compared with previous versions of the coronavirus has fueled the view that COVID-19 poses less of a risk than in the past. In which case, some ask, why go to great lengths …
TALLAHASSEE, Fla. (AP) — Republicans fighting President Joe Biden’s coronavirus vaccine mandates are wielding a new weapon against the White House rules: natural immunity. They contend that people who have recovered from the virus have enough immunity and antibodies to …
NEW YORK — U.S. employers have cooled to the idea of testing workers for possible immunity to the coronavirus as they prepare to reopen factories and other workplaces. Blood tests that check for antibodies to the new coronavirus have been …