The COVID-19 situation in Japan has magnified for nine consecutive weeks due to the spread of new mutant strains. The Ministry of Health, Labor, and Welfare reported a continuous increase in confirmed cases, leading some to speculate on the onset of the 10th wave. Experts emphasize the threat posed by highly contagious mutant strains and urge the public to remain vigilant and adhere to preventive measures.
In May 2023, Japan downgraded its COVID-19 prevention level to that of seasonal influenza, altering the reporting method. Results from around 5,000 designated medical institutions across Japan indicate a rising trend in reported cases, with an average of 12.23 patients per institution by the week ending January 21—1.4 times higher than the previous week and a consistent increase since late November 2023.