Tick Populations Expand, Bringing New Disease Concerns

Why it matters locally: Vermont, largely rural with extensive wooded areas, already has a significant tick presence and residents are at higher risk for tick-borne diseases. The expansion of tick populations and new disease concerns means continued vigilance and public health efforts will be crucial for the Green Mountain State.

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Ticks are expanding their geographic range, introducing new public health concerns, according to Holly Gaff, a mathematical ecologist at Old Dominion University. While certain areas of the country have long dealt with tick populations, researchers now observe them in previously unaffected regions. The expansion of tick habitats brings with it new threats. Gaff, who studies tick ecology, noted these changes during a discussion with William Brangham concerning the parasites' broader distribution. Scientists continue to monitor these developments to understand the full scope of the expanded tick presence and the associated health implications.