Hanoi was the only locality with over 100 new cases reported, at 141. It was followed by Nghe An (48), Ho Chi Minh City (39) and Phu Tho (36).
The seven-day average of new daily COVID-19 patients in the country stands at 729, down from 833 a week ago.
June 18 also saw 5,889 patients declared recovered from the virus, bringing the total recoveries to 9,597,375 to date.
There are currently 55 patients in serious condition across the country, with none on life support.
There were no COVID-19 fatalities for the sixth consecutive day. The death toll remains at 43,083, roughly 0.4 percent of the total caseload.
More than 225.2 million doses of COVID-19 vaccines have been administered to date, with nearly 202 million doses in the adult population, 17.5 million in those aged 12-17 years, and 5.77 million in children aged 5-11.
