Officials with Canada Post say an outbreak of COVID-19 has hit their massive facility.
They say 121 workers have tested positive since the start of the new year.
About 4,500 people work at the Dixie Road location.
A spokesman says public health officials have indicated most of the cases came from the broader community.
Over $40,000 Raised for Day of Giving
Turkstra and Credit Union big contributors, but also individuals raised over $14,000 to help people who have nothing after floods
Police Concerned After Man Released
London police say Connor Bennett is now in Thorold
Body Found During Home Demolition
Police believe Brenda LeBlanc was murdered
2 Men Wanted After Lincoln Break In
Police say this happened on Cherrywood Drive
Boy Severely Hurt in Lundy's Collision
Hamilton police helped the NRP arrest a driver for impaired driving
Fed/Prov Volunteers Help Cleanup
City of St. Catharines says Team Rubicon volunteers are assessing damage
Police Investigating Fatal Wainfleet Crash
They say a motorcycle driver lost control on Golf Course Road in Wainfleet
Man Arrested in Relation to Child Porn
Police say Port Colborne man didn't comply with release order, he's been active in online tutor program