The prevalence in Ottawa of Borrelia burgdorferi (bacteria causing Lyme Disease) in local Ixodes scapularis (blacklegged tick) is now high enough that Ottawa Public Health is recommending post-exposure prophylaxis in the presence of defined criteria.
Other local Ontario areas currently deemed “High Risk” areas include the following:
Eastern Ontario Health Unit (includes counties of Stormont, Dundas, Glengarry, Prescott, Russell, and the city of Cornwall)
Kingston, Frontenac, Lennox and Addington (includes Kingston, Napanee, Cloyne, and Sharbot Lake)
Lanark, Leeds and Grenville Health Unit (includes Gananoque, Perth, Smiths Falls, Carleton Place, and Brockville)
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Hastings-Prince Edward Health Unit (includes the County of Prince Edward, Hastings County, Quinte West and Belleville)
See Ontario map for 2018 risk areas:
https://www.publichealthontario.ca/en/eRepository/Lyme_disease_risk_areas_map.pdf
