61 of the cases were detected in Bac Giang, 38 in Bac Ninh, 7 in Da Nang, 5 in Hanoi, 2 in Phu Tho, 2 in Hung Yen and 1 in Vinh Phuc.
The latest cases brought the national count on Monday to 184 including 174 domestic infections.
On Monday morning Vietnam confirmed its 37th COVID-19 death. The Ministry of Health said the 34-year-old man from Bac Ninh province died of severe pneumonia due to COVID-19, brain injury related to an earlier accident, and meningitis.
Sine a new COVID-19 wave broke out on April 27, Vietnam has seen more than 1,200 cases nationwide.
The country has so far recorded 4,359 cases including 2,668 recoveries and 37 deaths.
Nearly 1 million people in Vietnam have been inoculated against COVID-19, with more than 22,000 getting two shots, according to the Health Ministry.