Of the new cases, northern Bac Giang Province recorded 45 that are linked to clusters at its industrial parks.

Its neighbor Bac Ninh Province got 19 cases, including 10 related to a cluster at the Khac Niem industrial park, seven associated with a cluster at Que Vo industrial park and two are people who had contact with previously confirmed Covid-19 patients.

HCMC recorded 10 patients. Two of them had come into contact with Covid-19 patients and eight are linked to a cluster that emerged last Wednesday from a Christian congregation based in Go Vap District.

Ha Nam Province in the north reported one case that is a man having had contact with a Covid patient.

Since April 27 when the new wave started in Vietnam infections have been recorded in 37 of the nation's 63 cities and provinces.

Bac Giang and Bac Ninh suffer the most infections, at 2,864 and 1,017, followed by Hanoi with 432 and HCMC with 324.

The nation had vaccinated 1.2 million of its 96-million population against the new coronavirus.