Photo/Illutration People wait to cross a pedestrian crossing in Tokyo's Shibuya district on Jan. 10. (AP Photo/Eugene Hoshiko)

Tokyo reported 871 new COVID-19 cases on Jan. 10, 8.5 times the number for the previous Monday, metropolitan health officials said.

The daily average of new cases over the week until Jan. 10 was 774.6, more than 10 times the average of 75.7 recorded for the preceding week.

The Jan. 10 count marked the first time in three days for the single-day tally to fall below 1,000, but Mondays typically have smaller totals than other days of the week because of lower levels of testing on the weekends.

Most of the newly confirmed infections involved relatively young people.

Of the 871 new patients, 326, or nearly 40 percent, were in their 20s, 145 were in their 30s, 112 were teenagers and 111 were in their 40s, the officials said.

Forty-one patients were under 10, 69 were in their 50s, 38 were in their 60s and 43 were 65 or older, they added.

The number of serious COVID-19 cases requiring a ventilator or ECMO heart-lung bypass machine was four, the same as Jan. 9.

No new deaths from COVID-19 were reported, the officials said.