Photo/Illutration An electron microscope photo of the Omicron strain of the novel coronavirus (Provided by National Institute of Infectious Diseases)

The health ministry reported 60,268 new COVID-19 cases for the week ended Jan. 21, marking the ninth consecutive seven-day period of increase.

Preliminary figures released Jan. 26 reflect the situation at 5,000 or so select medical institutions nationwide, which translates into an average of 12.23 cases of the novel coronavirus per institution.

This is approximately 1.36 times the number of cases reported the previous week when there were 8.96 cases. The number of hospitalized patients also doubled from the end of last year.

The number of cases per medical institution has not exceeded 10 since the week of Sept. 18-24 when there were 11.01 cases.

The highest number of cases by prefecture was 18.99 in Fukushima, followed by 18.33 in Ibaraki and 17.33 in Aichi. Tokyo had 8.33 cases, followed by Osaka with 7.96 and Fukuoka with 10.40.

The number of cases increased in all 47 prefectures.