Of these, 45 patients are undergoing treatment and 225 have been discharged from hospitals.
Among the active patients, 13 have tested negative once and three twice.
However, there are five patients who have relapsed being monitored at different hospitals in the country. The Central Institute of Hygiene and Epidemiology in Hanoi and Ho Chi Minh City Pasteur Institute have cultured the virus taken from them to try and find the cause.
By last Friday morning, Vietnam had gone eight straight days clear of new infections, but the evening saw two new cases, both students returning from Japan. They were quarantined on arrival and are now under treatment in Hanoi.
From April 16, there has been no infection caused by community transmission.
The country has 52,000 people in quarantine - 323 in hospitals, 11,000 in isolation facilities and the rest at home.
The Covid-19 pandemic has spread to 210 countries and territories, with almost 207,000 deaths reported so far.