Almost 5% of the people in the Chinese city of Wuhan may have been infected with Covid-19, a study by researchers at the Chinese Centre for Disease Control and Prevention has shown. Wuhan's po[CENSORED]tion is estimated at 11 million, which suggests that almost 500,000 people may have had the virus. If true, that is almost 10 times higher than Wuhan's officially recorded number of 50,354 cases. Asymptomatic cases are not counted in China's official case tally. The study, carr