Vietnam reported on Tuesday morning 10 new cases of COVID-19, all linked to Da Nang, where over 140 locally-transmitted infections have been logged since late last month.
Seven of the new patients were documented in Da Nang while the other three were registered in neighboring Quang Nam Province, the National Steering Committee for COVID-19 Prevention and Control said.
The patients in Quang Nam are aged 35 to 67 and were all traced to Da Nang Hospital.
The ages of the cases in Da Nang, an epicenter now, range from 30 to 68, linked to the same hospital and including one medical worker.
Vietnam has logged a total of 652 COVID-19 cases, including 307 imported ones, since January, when the coronavirus outbreak first hit the country, according to the Ministry of Health.
The country has announced 374 recoveries and six virus-related fatalities who all had serious pre-existing conditions.
Two hundred and five local infections have been linked to Da Nang, a touristy city on the central coast, since July 25, after Vietnam had gone 99 days with no documented community transmission.
The 205 cases consist of 142 in Da Nang, 44 in Quang Nam, three in Quang Ngai Province, three in Dak Lak Province, one in Dong Nai Province, eight in Ho Chi Minh City, two in Hanoi, one in Ha Nam Province, and one in Thai Binh Province.
Vietnam has conducted almost 500,000 real-time PCR tests since the beginning of the health crisis.
From July 25, Da Nang has carried out more than 100,000 real-time PCR tests, Hanoi almost 3,000, and Ho Chi Minh City over 15,000, alongside hundreds of thousands of quick tests on arrivals from the coastal city.