Ho Chi Minh City recorded a new single-day record of 8,499 cases, up 2,536 from Thursday. It was followed by neighboring industrial hubs Binh Duong (3,676) and Dong Nai (986).
The highest single-day figure was 17,409 on Aug. 27.
338 deaths were recorded Friday with 250 of them in HCMC. 11,344 patients were discharged in the country.
Vietnam has recorded 501,649 Covid-19 cases since the beginning of the pandemic.
The country has vaccinated 20.83 million people, in which 2.96 million have received two doses.
Hanoi will continue to impose social distancing in 10 districts for another 15 days starting September 6.