The Ministry of Health reported 12,477 locally-acquired coronavirus infections in Vietnam on Monday, together with over 9,700 recoveries and 311 fatalities.
The local cases were recorded in 39 provinces and cities whereas the nation registered four separate imported infections, the health ministry said.
The ministry had documented 13,101 domestically-infected patients on Sunday.
It detected 8,099 of the new cases in the community, with the remaining found in isolated areas or centralized quarantine facilities.
Ho Chi Minh City logged 7,122 local infections, Binh Duong Province 2,194, Dong Nai Province 871, Long An Province 857, Tien Giang Province 234, Kien Giang Province 201, Tay Ninh Province 134, Khanh Hoa Province 97, Dong Thap Province 95, Da Nang 63, and Hanoi 42.
Vietnam has documented 532,490 community transmissions in 62 out of its 63 provinces and cities since the fourth – and worst – virus wave emerged in the country on April 27.
Ho Chi Minh City is hit the hardest with 258,536 patients, followed by Binh Duong Province with 134,627, Dong Nai Province with 29,420, Long An Province with 25,942, Tien Giang Province with 10,805, Dong Thap Province with 7,517, Khanh Hoa Province with 6,953, Da Nang with 4,651, Hanoi with 3,817, and Ba Ria-Vung Tau Province with 3,707.
By comparison, Vietnam confirmed a combined 1,570 locally-transmitted infections in the previous three waves.
The health ministry announced 9,730 recoveries on Monday, bringing the total to 301,457.
The toll has risen to 13,385 fatalities after the ministry recorded 311 deaths on the same day, including 233 in Ho Chi Minh City and 39 in Binh Duong Province.
Vietnam has confirmed 536,788 patients since the COVID-19 pandemic first struck it early last year.
Health workers have administered around 22 million vaccine doses, including 567,105 shots on Sunday, since inoculation was rolled out on March 8.
About 3.3 million people have been fully vaccinated.
Health authorities aim to immunize at least two-thirds of a population of nearly 98 million people against COVID-19 by the first quarter of next year.