The cumulative number of COVID-19 cases in Japan reached 33,812,143 on Sunday, meaning that more than one-fourth of the country's population has been infected with the coronavirus since its first outbreak about three years ago.

Japan's first COVID-19 case was confirmed in January 2020. The cumulative number of cases surpassed 10 million in July, 20 million in September and 30 million in January this year. On Aug. 19 last year, the number of daily new cases hit a record of over 260,000.

By prefecture, Tokyo had the largest number of cumulative cases, at 4,385,573, followed by Osaka, at 2,850,626, Kanagawa, at 2,239,277, Aichi, at 2,125,941 and Saitama, at 1,814,481.

The first COVID-19-linked death in Japan was confirmed in January 2020. On Jan. 13 this year, the daily toll hit a record 523. The cumulative toll was 74,692 as of Sunday.

Prefectural and other authorities will stop releasing daily case numbers on Monday, when the country lowers COVID-19 to a lower-risk category of infectious diseases that includes seasonal flu.