The policy response to coronavirus in England isn’t succeeding in controlling the disease’s spread, scientists said Thursday, adding pressure on U.K. Prime Minister Boris Johnson to introduce another national lockdown. Infections are doubling every nine days and an estimated 960,000 people are carrying the virus in England on any one day, according to the latest findings from Imperial College London and Ipsos Mori, which is conducting one of the country’s largest studies of the disease. The reproduction rate of the virus — a measure of how many people on average are infected by a single carrier — has risen to … (full story)