The Hanoi Center for Disease Control on Wednesday morning reported eight new suspected COVID-19 cases linked to a fresh cluster whose source of infection has yet to be identified.
All of these cases are traced to a cluster at T&T Group in Hoan Kiem District and the Park 11 building in the Times City urban area in Hoang Mai District.
The individuals include two men and three women aged 21 to 58 and three children aged four to ten.
Although they have all tested positive for the novel coronavirus, only six of them have been confirmed as COVID-19 patients by the health ministry.
The six were coded patients No. 5,932 to 5,937.
Hanoi has documented 335 local COVID-19 infections, including 148 cases in the community and 187 at the National Hospital for Tropical Diseases and K Hospital, since the fourth wave of transmissions began on April 27.
Thirty-seven cases linked to the cluster at T&T Group and the Park 11 building in the Times City urban area have been recorded so far.
Local authorities have yet to identify the source of infection of this cluster.
Another major COVID-19 cluster in the capital includes 46 patients.
The infection source came from a Chinese expert and a former company director who previously traveled to central Da Nang City.
As of Wednesday afternoon, Vietnam has logged 5,971 COVID-19 cases, with 2,794 recoveries and 44 deaths.
The country has detected 2,913 domestic infections in 30 provinces and cities in this round.