Photo/Illutration Many restaurants and bars are temporarily closed down in the Shinbashi district of Tokyo under the third state of emergency on April 26. (Asahi Shimbun file photo)

The number of new COVID-19 cases in Tokyo on May 6 fell to 591, but patients in serious condition increased by three, metropolitan health officials said.

The new infection tally was down from 621 the previous day. It brought the daily average of confirmed new cases over the week through May 6 to 736.6, or 94.2 percent of the figure for the preceding week.

The latest period overlapped with the Golden Week holidays, when fewer people were tested for the novel coronavirus.

Of the latest cases, patients in their 20s accounted for 151, the highest number for all age groups. They were followed by 122 patients in their 30s, 92 in their 40s, and 70 in their 50s. Seventy-two new patients are aged 65 or older.

The officials said the capital on May 6 had 72 seriously ill COVID-19 patients requiring ventilators or an extracorporeal membrane oxygenation (ECMO) device, which circulates blood through an artificial lung.