Hard-hit Brazil's coronavirus death toll soared in March, its deadliest month yet in the pandemic, with 66,573 people killed by Covid-19, more than double the previous record. The South American country, whose hospitals have been pushed dangerously close to collapse by a new surge of severe cases, has now recorded a total of 321,515 deaths from Covid-19, the health ministry said -- a toll second only to that of the United States. bur-jhb/bfm