Japan's Prime Minister Yoshihide Suga said the country is on "maximum alert" as it reported its highest number of new Covid-19 cases in a single day since the pandemic began.
The country's Health Ministry recorded 2,191 new coronavirus cases and nine new deaths for Wednesday.
"We are at maximum alert," Suga told reporters Thursday.
Suga asked the public to wear masks, even at the dinner table, and to abide by prevention measures. He also told ministers to increase testing in high-risk facilities.
"Experts pointed out the risk of infection through group dining. They advise to wear masks in conversation even when dining. Please dine quietly with mask on. I will do it too from today," Suga said.
Tokyo recorded 493 new cases for Wednesday, the highest since the last peak of 472 cases on Aug. 27. Japan's capital city has now reported a total of 35,723 cases.
Japan's total caseload stands at 123,578, with 1,935 deaths.