Two healthcare workers of Hanoi-run Thanh Nhan hospital have tested positive for the virus while giving treatment to COVID-19 patients, according to a Hanoi health official.
However, they are not able to transmit the virus to others in the community, said Hoang Duc Hanh, deputy director of the Hanoi Department of Health at a meeting of the Municipal Steering Committee on COVID-19 Prevention and Control on June 3.

A restricted area for COVID-19 patients in hospital.
Khong Minh Tuan, deputy director of the Hanoi Centre for Diseases Control also warned that the risk for virus transmission in the restricted area for COVID-19 patients is very high, and even small mistake could lead to virus infection.
Besides the two healthcare workers, 14 other people have been diagnosed with the virus from June 1 to 3. They are all F1 cases (in first-hand contact with COVID-19 patients) and in quarantine areas.
Currently, 48 locations in Hanoi remain in lockdown, affecting more than 7,700 residents.
As many as 1,583 people returning from Ho Chi Minh City, a coronavirus hotspot in Vietnam have made health declarations. Of them 1,288 people have tested negative.