America's Covid cases have surged by half in two weeks, but scientists say there is still 'no evidence' that top-up jabs are needed for most Americans — despite a boss today insisting more jabs will be needed by fall.Figures from states, counties and local health officials showed a total of 69,334 cases were recorded yesterday, up on the tally from mid-April.The jump is being driven by the even more infectious variant BA.2.12.1 that is now behind two in five infections nationwide — up from less than one in ten a month ago.
Load More
Load More