Study says nearly half a million may have had Covid in Wuhan -- far beyond the official figure

Nearly half a million residents in the Chinese city where the novel coronavirus first emerged may have been infected with Covid-19 -- almost 10 times its official number of confirmed cases, according to a study by the Chinese Center for Disease Control and Prevention (CDC).

source https://www.cnn.com/2020/12/29/asia/china-coronavirus-seroprevalence-study-intl-hnk/index.html