China News Service, May 6. According to the Japan Broadcasting Association (NHK) report, on the 6th, Japan's Ministry of Health, Labour and Welfare said that four more children in the country were diagnosed with acute hepatitis of unknown cause.

Image source: Screenshot of the Japan Broadcasting Association (NHK) report

  All four have been hospitalized for treatment, sources said.

So far, seven children in Japan have contracted the disease.

  The report pointed out that some patients will have symptoms such as diarrhea and vomiting, and the Ministry of Health, Labour and Welfare is investigating.