Photo/Illutration Reporters wear face shields and masks as they cover a news conference on the vaccination of health care workers in Tokyo on Feb. 17. (Reina Kitamura)

Tokyo logged 445 new COVID-19 cases on Feb. 18, with the daily count dropping below 500 for the 12th consecutive day, metropolitan health officials said.

However, the count topped 400 for the first time since Feb. 11, when 434 new cases were reported.

The seven-day daily case average over a week through Feb. 18 came to 355.1, representing 76.3 percent of the number for the preceding week, health officials said.

Of the 445 new cases, patients in their 20s accounted for 108, higher than any other age group.

Patients 65 or older totaled 91 of the new cases, while those in their 30s and 40s numbered 80 and 67, respectively.

The number of serious cases fell three from the previous day to 84.

Tokyo defines serious cases as patients requiring ventilators or an extracorporeal membrane oxygenation (ECMO) device, which circulates blood through an artificial lung.