Among the new patients, Ho Chi Minh City recorded the most, 2,027, followed by its neighbor Binh Duong Province, 1,415, and the Mekong Delta province of Long An, 318.
Hanoi recorded 67 cases, raising its tally to 1,397.
Of all the new infections, 884 were detected in the community and 3,488 were in quarantine zones and areas under lockdown.
More than three months into the new wave, Vietnam has recorded community infections in 62 of its 63 cities and provinces.
HCMC is the epicenter of the latest wave with 92,270 cases.
Vietnam has administered more than 6.2 million Covid-19 vaccine shots, fully vaccinating 620,.611 people with two shots.