Hanoi accounted for the most cases, 1,704, followed by the Mekong Delta province of Ca Mau with 1,590 cases and HCMC's neighboring province of Tay Ninh, with 939 cases.
HCMC recorded 813 cases.
The ministry confirmed 250 more Covid-19 deaths, including 58 in HCMC and 31 in Tay Ninh, raising the national death toll to 30,041, or 1.9 percent of the total infections.
The fourth wave that hit Vietnam in late April has until now been responsible for over 1.56 million cases. Of them, more than 1.15 have recovered.
Almost 62.9 million people of the nation's 96-million population have been vaccinated with two doses, and more than 1.3 have received the third dose, including the one of the three-dose combo for Cuba's Abdala vaccine.