Photo/Illutration People wearing face masks enjoy an illumination of maple trees for the fall foliage season at Otaguro Park in Tokyo on Dec. 3. (AP Photo)

Tokyo reported 327 new cases of the novel coronavirus on Dec. 6, the day after logging a record 584 new infections, metropolitan health officials said.

Meanwhile, 15 deaths attributable to COVID-19 were recorded in Hokkaido on the day, setting a record daily death toll for the northernmost main island. The previous record was 14, which was logged on Dec. 1.

In Tokyo, 54 patients were reported in serious condition, requiring treatment using ventilators or an extracorporeal membrane oxygenation, an ECMO lung bypass machine. The figure was down from 55 the day before.

Of the newly confirmed patients, 86 were in their 20s, followed by 69 in their 40s, 64 in their 30s and 36 in their 50s.

In Hokkaido, officials reported 187 new infections on Nov. 6, bringing the overall total to 10,039 in the popular tourist destination.