Official tests for antibody prevalence suggest an infection rate 10 times higher than official number
A Chinese study of coronavirus antibodies has found almost half a million people may have had Covid-19 in Wuhan, a number that is 10 times the official figure.
According to the study of antibody prevalence, the infection rate was also far higher in Wuhan than surrounding areas, suggesting the virus had been well contained in the city where the outbreak first began.
