Officials with the Middlesex-London Health Unit (MLHU) and Southwestern Public Health (SWPH) say coronavirus testing is underway at a St. Thomas-area farm after at least eight temporary foreign workers tested positive for the virus this week.

An outbreak was declared on Thursday at Ontario Plants Propagation, a greenhouse operation along John Wise Line, days after the MLHU said it first became aware of a case Monday night involving a worker at the farm, health officials said on Friday.

That initial case led to 16 of the worker’s close contacts being tested on Tuesday, with seven of the tests coming back positive. As those workers live in London, the seven are included in the tally of new cases that was reported on Friday by MLHU.

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According to the health unit, another 40 workers living at the same complex as the first case were tested on Wednesday at London’s Carling Heights Assessment Centre.

The remaining workers in the group, meanwhile, were to be tested on Friday at Ontario Plants Propagation. Test results for all were expected over the coming days.

“The operator of this farm has been tremendously co-operative with us,

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