The first known infection of the invasive eye worm Thelazia callipaeda was found in a black bear in Pennsylvania, highlighting its geographic expansion and host range.
The T. callipaeda worm's emergence in the US poses a risk to humans and domestic animals, indicating a significant public health concern and ecological threat.
Originally detected in a pet dog in 2020, T. callipaeda has rapidly spread to various locations within the US, demonstrating its invasive potential.
With at least 13 adult parasites found in one bear, the findings reveal alarming implications for wildlife health and the potential for transmission to humans.
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