The new cases were recorded in three northern provinces of Bac Giang, Bac Ninh, Ha Nam, and Ho Chi Minh City.
Bac Giang registered 24 cases while its neighbor Bac Ninh reported six and all patients are linked to clusters at their industrial parks.
Ha Nam recorded two cases who are people that have come into contact with Covid patients.
In HCMC, 12 cases are all associated with the cluster at a Christian congregation based in Go Vap District.
Almost six weeks into the new wave, Vietnam has recorded infections in 39 of its 63 cities and provinces.
Of the cases, Bac Giang has the highest number of infections, at 3,113, followed by Bac Ninh with 1,099, Hanoi with 436, including 94 at a hospital under lockdown and HCMC 388.
More than 1.2 million of Vietnam's 96-million population have been vaccinated against the novel coronavirus.