All of the new patients are related to the central city of Da Nang, the current pandemic hotspot.
Of the total cases, 317 are imported who were quarantined right after their arrival.
There are currently 178,695 people who had close contact with COVID-19 patients or entering Vietnam from pandemic-hit regions are being quarantined nationwide, including 5,252 at hospitals, 27,798 at other concentrated quarantine facilities, and 145,645 at home.
As many as 395, or 48.6%, of the total patients have made full recovery. Among those under treatment, nine have tested negative for SARS-CoV-2 that causes the disease once, and 37 others at least twice.
11th COVID-19-related death
Earlier the same day, a 55-year-old woman in Da Nang died, becoming the 11th fatality from COVID-19 in Vietnam, according to Deputy Minister of Health Nguyen Truong Son.
She died of the COVID-19-related complication of acute respiratory distress syndrome, multiorgan dysfunction syndrome, and gastrointestinal bleeding.
All the COVID-19 fatalities in the country so far have either been residents of the city or the nearby Quang Nam province, and had suffered from serious chronic diseases such as cancer, renal failure, and diabetes prior to becoming infected.