Jan 31 (Reuters) - Merck & Co's (MRK.N) new antiviral pill, once touted as a potential game changer for treating COVID-19, is the last choice among four available options for at-risk patients given its relatively low efficacy and potential safety issues, U.S....

Since the start of the pandemic, about 6.8 million Americans have died. That’s roughly a million more deaths than would have been expected in that time. These so-called excess deaths were overwhelmingly attributed directly to Covid-19. The remainder likely include...

Sore throats and runny noses are increasingly common in vaccinated people with Omicron. But Omicron patients report fewer instances of fever, cough, and loss of taste or smell . Almost as soon as Omicron started spreading, doctors noticed slight differences in their...

Does Omicron cause less damage in the lungs than Delta? David Paul Morris/Bloomberg via Getty Images Animal studies and experiments involving cells cultured in the laboratory suggest that the Omicron variant may have a reduced ability to infect the lungs, compared...

This statement was updated on 29 Nove mber 2021 to correct some references and associated links Background Although the majority of COVID-19 vaccines are only approved for use in adults aged 18 years and above, an increasing number of vaccines are now also being...