. In Canada, there has been a geographic range expansion of the black-legged tick I. scapularis, the main vector of Borrelia burgdorferi, the agent of Lyme disease. Vector surveillance of /. scapularis has identified strong correlation between temperatures and the emergence of tick populations, their range and recent geographic spread, with recent climate warming coinciding with a rapid increase in human Lyme disease cases . Ixodes ricinus, the primary vector in Europe for both Lyme borreliosis and tick-borne encephalitis is sensitive to humidity and temperature  . There has been an observed range expansion to higher latitudes in Sweden and to higher elevations in Austria and the Czech Republic.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report