The female worker, 26, has been diagnosed with the SARS-CoV-2 virus after a COVID-19 screening campaign for all healthcare workers at Hai Phong Transport Hospital.
She has tested positive for the virus twice, said the Hai Phong Preventive Medicine Centre on February 22, adding the remaining 88 workers have tested negative.
The patient was said to have stayed in Hai Phong for the past 14 days. She showed no flu-symptoms.
She was transferred to Vietnam-Czech Republic Hospital for medical surveillance and treatment.
Relevant agencies scrambled to cordon off Transport Hospital and Lo village in Thuy Nguyen district, her hometown, for chemical disinfection and epidemiological investigations.
They also tracked down people who had come into contact with the patient for immediate quarantine and testing.
Earlier Hai Phong recorded just one case at its Children’s Hospital who was then transferred back to Hai Duong province, the country’s biggest coronavirus hotspot at present.
As many as 795 cases have been confirmed in Vietnam since the virus recurred in Hai Duong late last month. The outbreak has spread to 13 cities and provinces across the country, with Hai Duong, a gateway to Hanoi capital, reporting 615 cases alone.