Hanoi and the northern provinces of Nam Dinh and Bac Ninh added the cases from previous days, making them the three localities with the highest numbers of new cases confirmed in the day: Hanoi with 211,071, Nam Dinh with 50,788 and Bac Ninh with 38,862.
The total Covid death toll rose to 41,820 with the confirmation of 77 deaths on Saturday.
The total number of infections in the fourth wave since late April last year is now more than 7.71 million, of which 3.99 million have recovered.
The nation has administered over 201 million Covid-19 vaccine doses so far.