Overview

• Fukuoka reported 175 erythema infectiosum cases for September 15–21, a week-on-week drop of 16, extending its official warning to 19 straight weeks.
• Saga logged 42 cases in the same period, down 16, and maintained its outbreak warning because reports per sentinel clinic remain elevated at 3.5.
• The figures come from designated sentinel medical institutions that submit weekly tallies used to set prefectural advisories.
• Parallel surveillance showed declines in other infections, with Fukuoka recording 1,003 COVID-19 cases and 196 influenza cases for the week.
• Saga reported 199 COVID-19 cases and six pertussis cases, and nationwide COVID-19 fell to 26,631 weekly cases, the first decrease in two weeks.