In 2016, 174 cases of Lyme disease were reported to public health authorities, including 124 cases that were acquired in Québec.
The Laboratoire de santé publique du Québec received 2 158 Ixodes scapularis ticks from Québec, primarily from the regions of Estrie, Mauricie et Centre-du-Québec, Montréal, Laurentides, Lanaudière, Montérégie and the Capitale-Nationale. More than 17% of these ticks were positive for Borrelia burgdorferi.
Active surveillance carried out in 2016 made it possible to collect 1 036 Ixodes scapularis ticks of which 82 were positive for Borrelia burgdorferi: they were spread over 22 sites mostly located in Montérégie. Active surveillance identified four new endemic municipalities for Lyme disease in Estrie, Mauricie et Centre-du-Québec, Outaouais and Montérégie.