US Covid-19 deaths top 1,900 a day

Covid-19 deaths in the US have climbed to an average of more than 1,900 a day for the first time since early March, with experts saying the virus is preying largely on a distinct group — the 71 million unvaccinated Americans. The increasingly lethal turn has filled hospitals, complicated the start of the school year, delayed the return to offices and demoralised health care workers. "It is devastating," said Dr. Dena Hubbard, a pediatrician in the Kansas City, Missouri area, who has cared for babies delivered prematurely by caesarean section in a last-ditch effort to save their mothers, some of…