Of the new patients, 1,769 were recorded in Ho Chi Minh City, with 1,391 in quarantine zones and areas under lockdown and 378 linked to other clusters in the community.
Among other southern localities, Binh Duong Province, a HCMC's neighbor, recorded 124 cases, 92 of whom are linked to two previously confirmed patients, 13 returned from HCMC and the source of transmission of the remaining 19 cases is still unclear.
Dong Nai Province that also borders HCMC got 43 cases, with 28 having contact with previously confirmed patients, one returning from HCMC and 14 having unknown infection sources.
Mekong Delta's Vinh Long Province got 42 cases, with 38 linked to a cluster at a company in Long Ho District and four returning from HCMC.
Dong Thap Province in the delta registered 41 cases, including 36 that have had direct contact with previously confirmed patients, one returned from HCMC. Four other cases have unknown transmission sources.
The region's Ben Tre Province reported 34 cases, Binh Phuoc seven cases, and An Giang three cases and all are all related to previously confirmed patients.
Soc Trang Province in the delta registered six cases, including two that have had direct contact with previously confirmed patients and one linked to a cluster at Binh Dien wholesale market in HCMC's District 8. Another case returned from Binh Duong Province, one returned from Dong Nai and one returned from Can Tho.
Can Tho City, the delta's capital, got four cases, with three linked to previously confirmed patients and one related to a cluster at Tan An market in Ninh Kieu District.
In central Vietnam, Khanh Hoa Province recorded 22 cases, including one linked to an existing case, 13 in locked down areas, and for the remaining eight cases, the health authorities are still looking into their source of infection.
Binh Dinh reported two cases and Phu Yen one, and they have been isolated prior to the positive test results.
In the Central Highlands, Lam Dong Province got one case that had close contact with a Covid-19 case while Gia Lai Province and Dak Nong Province reported one case each, both with unclear transmission sources.
Hanoi and the northern Bac Ninh Province got two cases each, and they are linked to existing cases.
Vietnam has recorded local Covid-19 cases in 58 cities and provinces since the new wave started on April 27.
HCMC has had the highest infections so far, 25,682.
The nation has vaccinated more than 4.23 million people against Covid-19 and 298,177 have got two doses.