Add Yahoo as a preferred source to see more of our stories on Google. There are certain things antibody tests can (and cannot) tell us about our immunity to COVID-19. (Photo: Yulia Reznikov via Getty ...

LOS ANGELES -- U.S. regulators issued new guidance this week shortening the time that people who received Moderna or Pfizer's COVID-19 vaccine have to wait for a booster, and it's different than the ...

As the world continues to navigate the aftermath and lingering presence of COVID-19, one question remains as relevant as ever: Which COVID-19 test is right for me—diagnostic or antibody? Whether ...

WEST PALM BEACH, Fla. — If you've been infected with COVID-19 or got the vaccine, you likely have antibodies. But what does that really tell you? Waking up every day in a pandemic for Leigh Ann David ...

Many Americans are basking in the warm light of what appears to be the end of the coronavirus pandemic. Millions of people are vaccinated, and restrictions that had prevented further spread of ...

As the world watches and wonders when coronavirus pandemic stay-at-home orders and social distancing measures might end, some hope antibody tests might help provide a solution. As the world watches ...

Dr. Elitza Theel is the Laboratory Director for the Infectious Diseases Serology Lab at the Mayo Clinic, which is one of many medical centers across the U.S. that has started to roll out a COVID-19 ...

Whether the vaccinated should get booster shots is already a scientifically, ethically, and strategically vexing question. Somehow, the federal government has made it ...

Public health experts, including members of the White House Coronavirus Task Force, have argued accurate Covid-19 antibody tests can support efforts to get Americans back to work by determining who ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (CNN) — Antibody tests used to determine if ...