Thirty-six of the cases in Harmony Beef are considered active and two are considered cured.
The factory was hit by a similar outbreak in March, with 36 cases eventually being reported, with the first confirmed on March 18 before an outbreak was declared on March 26.
In response, the union representing federal food inspectors has called for factories with active cases to shut down for 14 days.
According to the latest figures from health officials, there are currently 1,185 active cases of COVID-19 in the province, of which 12,054 are considered cured.
As of Friday afternoon, there were 44 people in the hospital, including seven in intensive care. There have been 237 deaths associated with the coronavirus.
To date, the province has performed more than 933,000 tests.