: an ixodid tick (Ixodes scapularis synonym I. dammini) of the eastern U.S. and Canada that transmits the bacterium causing Lyme disease
called alsoblack-legged tick
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This disease is transmitted mainly by deer ticks.—Dr. Andrew Bernstein, Boston Herald, 13 Aug. 2025 Telford’s lab has tested more than 3,500 nymph deer ticks (in their second life stage) between 2021 and 2024, the release stated, finding that between 1% and 2% of nymph deer ticks on Martha’s Vineyard are infected.—Melissa Rudy, FOXNews.com, 7 Aug. 2025 Here’s a breakdown: Not all ticks carry Lyme disease: Only deer ticks transmit Lyme disease and, even in high-risk areas, anywhere from fewer than 1 in 100 to more than half of the ticks are infected with it, according to Johns Hopkins Medicine.—Tiffany Acosta, AZCentral.com, 3 Aug. 2025 Black-legged ticks, also called deer ticks, carry Lyme-causing bacteria.—Itzel Luna, Chicago Tribune, 1 Aug. 2025 See All Example Sentences for deer tick
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