BEIJING, May 7 (Xinhua) -- China classifies all counties as low-risk for the novel coronavirus disease (COVID-19) from Thursday, a health official said.

The move came as no domestic cases have been reported in the Chinese mainland for four consecutive days as of Wednesday, with no new deaths for 22 consecutive days, said Mi Feng, a spokesperson for the National Health Commission, at a press conference in Beijing.

Mi noted that there is still uncertainty about the epidemic situation, calling for continuous efforts in patient treatment and rehabilitation management and implementation of regular epidemic prevention and control measures, to guard against virus rebound.