Two of those workers were likely infected overseas and passed the virus on to their roommates, the health ministry said.
SINGAPORE: Five cases of COVID-19 which are “probable” re-infections were discovered at the Westlite Woodlands dormitory as part of special testing operations, the Ministry of Health (MOH) said on Tuesday.
The five cases occupied the same room in the dormitory with cases 62181 and 62225, residents who had previously tested positive for COVID-19, forming a new cluster.
Two of the five re-infected cases arrived from Bangladesh on April 6, the health ministry said.
“Our epidemiological investigations revealed that they were likely to have been infected abroad and transmitted the infection to others in the room.
“Other epidemiological investigations are underway at their workplace,” the ministry said.
READ: Measures were put in place at Westlite Woodlands dormitory after 17 recovered workers again tested positive for COVID-19
The five men are among 24 recovered workers who tested positive for the coronavirus under special testing operations for residents of the Westlite Woodlands dormitory.
The tests were carried out as part of the investigations into case 62181, which tested positive for COVID-19 on April 19, the health ministry said in its overnight COVID-19 update.
The cases were immediately isolated and taken to the National Center for Infectious Diseases, the health ministry said.
The workers were not included in the new Tuesday case numbers.
The ministry said 11 of the 24 cases were assessed as shedding virus fragments, two of them are negative after retesting, while the remaining six cases are awaiting assessment by a panel of experts.
READ: Single case of COVID-19 in dormitory unrelated to other cases at Westlite Woodlands dormitory; worker “ probably ” caught a virus abroad
READ: Dorm residents who have recovered from COVID-19 no longer exempt from routine testing
The Department of Health on Tuesday reported 12 new cases of COVID-19 in Singapore – one in the community and 11 imported.
The only community case is a sea crew member working aboard the MT ALLI bunker and is part of the group of 6 infections.
The 42-year-old Indonesian man had not disembarked from the ship except to be vaccinated against COVID-19, the health ministry said.
Singapore reported a total of 61,063 COVID-19 cases and 30 deaths on Tuesday.
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