KINGSTON, ONT. -- Kingston, Frontenac, Lennox & Addington (KFL&A) Public Health is advising public transit riders in Kingston to seek COVID-19 testing after a transit rider who used two buses last Monday tested positive. In a release on Saturday, KFL&A Public Health said the individual used Kingston Transit routes 501 and 502 on Monday, April 5. The health unit says it is issuing the public notice to aid in contact tracing efforts because it is unable to identify all riders on the routes affected. The two buses in question are as follows: Monday, April 5: Route 502 departing Princess Street (north side) at Nelson Street at 1:04 p.m. to the Cataraqui Centre.