KFL&A Public Health asks those who took a trip on a Megabus from Toronto to Kingston to monitor for symptoms of COVID-19.
The health unit said a passenger who travelled from Toronto Pearson airport around 7 p.m. on Sept. 11 arriving in Kingston at 10 p.m. tested positive for COVID-19.
The health unit says it is unable to contact some of the passengers who may have been exposed during the trip.
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Health officials ask those who were on the bus to monitor for symptoms and get tested if any develop.
Testing is still recommended if symptoms do not develop.
KFL&A Public Health announced three new cases of COVID-19 Tuesday, with a total of 41 active cases.