A COVID-19 outbreak at a Vaughan mushroom farm has infected 29 workers, York Region Public Health is reporting.
Of the confirmed cases following mobile testing at Ravine Mushroom Farm, 24 are York Region residents, which has created a small spike in the steadily declining new case numbers in the region. Of the remaining cases, two are Durham residents; one is a Peel resident, one is a Toronto resident, and one is a Hamilton resident.
The public health unit has determined the risk of COVID-19 transmission to the general public is low, according to Patrick Casey, York Region director of corporate communications.
No services or products are offered to customers onsite, he added.
All staff who tested positive are in self-isolation, Casey said.
Public health investigators are following up with the close contacts of the confirmed cases, according to a July 3 public notice.
Public health inspectors visited the farm on June 28 and 29 and advised on additional infection prevention and control measures to supplement those the farm had in place, including physical distancing of employees and reaffirming the importance of staying home when ill, Casey said.
According to its website, Ravine Mushroom Farms Inc. in Woodbridge has been operated by three generations of family since 1975, growing to be one of the largest mushroom producers in Ontario supplying products to major supermarket chains and food service outlets.
"The farm owner is cooperating with public health and farm operations continue," Casey said.
Public health reports the cases as "workplace clusters," typically without identifying locations except when a public notice is issued.
Since July 2, the number of workplace cluster cases has jumped from 502 to 538 — 129 of which are York Region residents, of which 27 cases are active. Of the 77 workplace cluster locations, 12 are currently active.
The first confirmed case at the Ravine Mushroom Farm, which is on the King-Vaughan Road, was reported June 27.
“Public health inspectors have been going farm to farm ensuring that the living conditions are fine in order to prevent any large-scale outbreaks in York Region in the farming community,” medical officer of health Dr. Karim Kurji said Monday regarding the "small outbreak" among farm workers in Vaughan.