The National Health Commission said that more than 74,500 people have now been infected nationwide by the virus, which first emerged in central Hubei province in December.
Most of the new cases were in the provincial capital Wuhan, where the virus first emerged.
Hubei health officials said Thursday there had been 615 new cases in Wuhan and 13 more elsewhere in the province.
However, the Hubei health commission said it was reducing the number of previously reported cases in a number of cities in the province by 279.
National health officials said the over-reporting in Hubei was after nucleic acid tests were carried out on patients previously confirmed using lung imaging.
After the adjustment, the number of new cases confirmed nationwide was 394, the National Health Commission said.
Outside of Hubei, the number of cases has been steadily falling, with only 45 more cases reported on Thursday.
AFP.