The new patients were recorded in neighboring provinces of Bac Giang and Bac Ninh.

Bac Giang registered 24 cases while Bac Ninh 17 and they are all associated with ongoing clusters at the two's industrial parks.

They have already been quarantined in centralized camps or stayed in residential areas put under isolation prior to the test results.

Since the new wave started on April 27, local cases have been recorded in 39 cities and provinces, with Bac Giang and Bac Ninh accounting for the most infections, at 3,333 and 1,164.

They are followed by HCMC with 461 and Hanoi with 441, including 95 cases in a hospital under lockdown.