The province has identified two men who recently travelled by air as testing positive for presumptive cases of COVID-19.
They say both possibly contracted the illness while travelling. Both men are in their 30s.
Public health investigations are ongoing.
"As the COVID-19 pandemic evolves, all Manitobans have a role to play in slowing its spread and minimizing its impact on the health-care system and in communities," the government of Manitoba says.
The province is warning those on the three following flights that travelled between March 7 and March 8 may have been exposed to the first presumptive case in Manitoba:
- Philippines Airlines flight PR 466 from Manila to Incheon, Korea – rows 48 to 54
- Air Canada flight AC 0064 from Incheon, Korea to Vancouver International Airport – rows 30 to 36
- Air Canada flight AC 8624 from Vancouver International Airport to Winnipeg – rows 24 to 29
Those who travelled in these rows have been asked to self-isolate for symptoms by the province.