The Tokyo Metropolitan Government confirmed 17 new cases of coronavirus on Monday. That is the lowest single-day figure in the capital this year, falling below what had been the record low-for-the-year registered on Sunday.
The daily case count has now been below 50 for nine days in a row and under 20 for two straight days.
The latest seven-day average daily tally was under 30 for the first time in 16 months.
Tokyo officials say 20 patients are in serious condition, down two from Sunday.