Photo/Illutration Judges wear face masks at the World Cup diving competition at the Tokyo Aquatics Center on May 1. (Takuya Isayama)

About a quarter of newly confirmed COVID-19 cases in Tokyo on May 5 were patients in their 20s, a sign that the younger set is paying little heed to a state of emergency that will last at least until May 11.

Metropolitan government officials reported 621 fresh cases. For the week ending May 5, the daily average of new cases was 798.9, a 5.3-percent increase over the previous week.

Of the latest cases, 155 patients, or about 25 percent of the total, were in their 20s, while 142 were in their 30s, 100 in their 40s and 70 in their 50s. Sixty-one patients were aged 65 or older.

Sixty-nine patients displayed serious symptoms that require ventilators or an extracorporeal membrane oxygenation (ECMO) device, which circulates blood through an artificial lung.