Invasive mosquito species are spreading into historically temperate regions, and they are bringing new diseases with them. Connecticut's statewide monitoring program has already detected 54 species, including the Asian tiger mosquito, a southern species now moving north that can transmit dengue and Zika.
Climate change is the driver. Warmer, wetter conditions in places like New England are expanding viable habitat for species that previously could not survive there. The diseases these vectors carry are not hypothetical risks. Dengue and Zika are serious, and local transmission becomes possible the moment a competent vector establishes itself in a region.
The full article goes deeper on what surveillance programs actually look like, how monitoring data translates into public health response, and why early detection is the critical variable. The species list and the geographic shift data are worth reading in detail.
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