75,000 in Wuhan infected with coronavirus: study estimates

More than 75,000 people -- ten times the official tally of confirmed cases -- have been infected with the coronavirus in Wuhan, ground zero of a global health emergency, according to research published Friday.

"We estimate that 75,815 individuals have been infected in Wuhan as of January 25, 2020," a team led by Gabriel Leung from the University of Hong Kong reported in The Lancet.

As of January 31, the Chinese government said the number of confirmed cases had risen above 9,700 for all of China, including 213 deaths.

For Hubei Province -- including Wuhan, a city in central China of 11 million -- the official figure was nearly 6,000 confirmed cases and just over 200 deaths.

The World Health Organization on Thursday declared the outbreak a global health emergency, but said it was not recommending any international trade or travel restrictions.

"The apparent discrepancy between our modelled estimates of 2019-nCoV infections and the actual number of confirmed cases in Wuhan could be due ..