Scientists are reporting troubling signs that some recent mutations of the virus that causes COVID-19 may modestly curb the effectiveness of two current vaccines, although they […]
EU leaders will grapple Thursday with the threat of new coronavirus variants whose spread risks outpacing the hope that vaccines will put a quickish end to […]
New US President Joe Biden warned the worst of the pandemic is still to come, as the number of American coronavirus deaths surpassed the country’s troop […]
California said it’s safe to immediately begin using a batch of coronavirus vaccine doses after health officials urged a halt to injections and held a review […]