The Ministry of Health documented 3,985 additional COVID-19 patients in Vietnam on Friday, together with 5,202 recoveries and 56 fatalities.
The latest cases, including eight imported and 3,977 domestic infections, were found in 50 provinces and cities, the health ministry said, noting that 1,782 patients were detected in the community.
Ho Chi Minh City recorded 1,205 of the locally-infected cases, Binh Duong Province 471, Dong Nai Province 417, Dak Lak Province 266, An Giang Province 220, Soc Trang Province 148, Tay Ninh Province 147, Khanh Hoa Province 43, Can Tho City 17, Ba Ria-Vung Tau Province 12, and Hanoi eight.
Vietnam had logged 3,618 domestically-acquired infections on Thursday.
The nation has reported 876,788 community transmissions in 62 out of its 63 provinces and cities since the fourth virus wave emerged on April 27.
Ho Chi Minh City is severely affected with 423,406 patients, followed by Binh Duong Province with 227,799, Dong Nai Province with 60,498, Long An Province with 33,998, Tien Giang Province with 15,392, Dong Thap Province with 9,367, Khanh Hoa Province with 8,672, Da Nang with 4,942, Ba Ria-Vung Tau Province with 4,453, and Hanoi with 4,382.
Vietnam registered only 1,570 locally-transmitted infections in total in the previous three waves.
The health ministry announced 5,202 recoveries on Friday, taking the total to 803,326.
The toll has climbed to 21,543 deaths after the ministry confirmed 56 fatalities on the same day, including 33 in Ho Chi Minh City and seven in Binh Duong Province.
Vietnam has found 881,522 infections since the COVID-19 pandemic first hit it early last year.
Health workers have given more than 70.4 million vaccine doses, including 1,440,566 shots on Thursday, since vaccination was rolled out on March 8.
Over 20 million people have been fully inoculated.
Health authorities target to inoculate at least two-thirds of a population of nearly 98 million people against COVID-19 by the first quarter of next year.