A study by the Chinese Centre for Disease Control and Prevention suggest that the number of novel Coronavirus infections in Wuhan, the epicentre of the pandemic, could have been 10 times higher than the official tally, reported CNN.

The study is based on tests of blood serum samples of hundreds of Wuhan residents and has found an antibody prevalence rate of 4.43 per cent for COVID-19, CNN reported. It was conducted to understand the scale of infections in the city of 11 million people, which had 50,339 cases as of Sunday.