Scientists at Hong Kong University published research in a medical journal on Saturday that projects as many as 75,815 people in Wuhan, China, may have been infected with Coronavirus, the South China Morning Post reported.

The city of 11 million people has been on virtual lockdown for weeks as China seeks to stem the spread of the deadly virus. The death toll jumped overnight by 46 to 259 people, while the number of confirmed cases in China soared to 11,791. Around two dozen other countries have reported another 137 cases, Reuters reported.