Ticks have resumed activity in Quebec and New Brunswick as warmer spring temperatures return to eastern Canada [1].

The seasonal resurgence increases the risk of tick bites for humans and pets, which can lead to the transmission of Lyme disease [1], [2].

Warmer weather during the spring of 2025 has created favorable conditions for these parasites to emerge from dormancy [1], [4]. Ticks are primarily found in forested areas, where they wait for hosts to pass by [2].

Public health concerns center on the potential for Lyme disease, a bacterial infection transmitted through the bite of infected black-legged ticks [3]. While the current surge is concentrated in Canadian provinces, the global impact of the disease is significant. In France, for example, Lyme disease affects an average of 40,000 people per year [3].

Pet owners are cautioned to remain vigilant, as dogs are frequent targets for ticks during outdoor activities [2]. Experts said to check pets and clothing after spending time in wooded or grassy areas to identify and remove ticks quickly [2].

Local authorities in Quebec and New Brunswick said that the timing of tick activity is closely tied to the arrival of mild temperatures [1], [4]. This creates a window of heightened risk every year as the region transitions from winter to spring [1].

“Ticks have resumed activity in Quebec and New Brunswick”

The recurring seasonal surge of ticks in eastern Canada highlights the intersection of climate patterns and public health. As mild temperatures arrive earlier or persist longer, the window for potential Lyme disease transmission expands, necessitating consistent public awareness and preventative measures for both humans and animals.