All the new cases tested positive for the virus after having come into close contact with COVID-19 patients, the ministry said in its 06.00hrs update.
Notably, 10 cases were recorded in Kim Dinh commune, Kim Thanh district, a new coronavirus hotspot in Hai Duong.
Hai Duong set up a medical quarantine zone in Kim Dinh commune to slow the spread of the virus in the community.
Earlier on March 1 afternoon the ministry announced 8 locally transmitted cases, all living in Hai Duong province.
The Red River delta province, a gateway to Hanoi capital, is scheduled to end social distancing measures on March 3 after the fresh outbreak was basically brought under control.
However, the provincial administration stated it will maintain the drastic measures in medium-risk areas such as Kim Thanh and Cam Giang districts and Hai Duong city.
Hai Duong is the only locality in Vietnam that has reported community cases during the past few days.
Elsewhere, 10 centrally-run cities and provinces have reported no new community cases over the past two weeks, including Hanoi, Ho Chi Minh City, Bac Ninh, Bac Giang, Quang Ninh.
The third wave of the coronavirus, starting in late January 2021, has spread to 13 cities and provinces across the country, with 868 cases confirmed, including 676 cases in Hai Duong alone.
According to the Ministry of Health, 226 out of active cases in hospital have currently tested negative at least once.