Health Desk-27 July, 2020: Vietnam has ramped up its coronavirus control measures after recording four new locally transmitted cases.
The country has been lauded as a success story of the pandemic having acted early to close borders and enforce quarantine and contact tracing.
It has recorded just over 400 cases and no deaths, and had gone nearly 100 days with no new cases.
The new cases are all linked to Da Nang, a central coastal city popular with domestic tourists.
The first case - patient 416 - was a 57-year-old man who sought medical care on 20 July for flu symptoms and was diagnosed with Covid-19. He is now on a ventilator and according to doctors quoted in local media, in a critical condition.
Officials say they do not yet know where he contracted the virus and that he had not recently left the city.
Contact tracing identified more than 100 people who had interacted with the man, but all returned negative tests.
However over the weekend, three more cases were confirmed.
Non-essential businesses have been ordered to close and gatherings of more than 30 people are banned.
Hospitals across the country have also stepped up preventative measures, while the capital, Hanoi, has begun urging people to wear masks in public again.