Photo/Illutration An aerial view of central Tokyo (Asahi Shimbun file photo)

Tokyo reported 187 new cases of the novel coronavirus on Sept. 11, a significant drop from the previous day’s count of 276.

Most of the new patients reported on Sept. 11 are young adults in their 20s, accounting for 48 new infections.

Forty-five patients in their 30s tested positive for COVID-19, along with 30 in their 40s and as many in their 50s. Twelve people in their 60s were also confirmed infected, while another seven people between the ages of 10 and 19 tested positive for the coronavirus.

Six people in their 70s and five in their 80s tested positive. Three people younger than 10 have the virus, and one patient is in their 90s.

The number of serious cases in the capital stood at 24, up one from the previous day. The Tokyo metropolitan government defines serious cases as patients on a ventilator or extracorporeal membrane oxygenation, also known as an ECMO lung bypass machine.

The government lowered the COVID-19 alert to its second-highest level for the first time in about two months on Sept. 10, as the number of cases fell.

Officials are urging residents to remain cautious about the possibility of a resurgence of the virus.