You can once again order four free at-home COVID-19 tests from the federal government through the United States Postal Service (USPS) at covidtests.gov. The White House program reopened Thursday in ...

The recent hantavirus outbreak linked to the Dutch cruise ship MV Hondius has renewed public attention on how dangerous viral infections are diagnosed, and whether testing works similarly to Covid-19.

A Covid-19 antigen self-test kit shows a positive case on January 13, 2022 in Madrid. - Spain today agreed to cap the cost of Covid antigen tests at just under three euros after the government came ...

Add Yahoo as a preferred source to see more of our stories on Google. As the nation experiences what many experts believe is the second-largest wave of COVID infections since the pandemic started, ...

Over 75% of Californians are now fully vaccinated, and over 58% have received their COVID booster shot. But widespread breakthrough infections in fully vaccinated people and the recent rise in COVID ...

The question quickly arose whether existing rapid antigen tests could detect newly emerging variants. Using clinical samples obtained from diagnostic labs throughout the U.S. from 2020 to 2023, the ...