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Cochliomyia hominivorax
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ENTITY · PATHOGEN/PEST
Cochliomyia hominivorax
Parasitic fly whose larvae feed on living tissue of warm-blooded animals, lethal to livestock.
PARTICIPATES IN
New World Screwworm
Spreading north through wildlife and livestock hosts
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15
RELATIONSHIPS
RECENT CLAIMS MENTIONING THIS ENTITY
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US New World screwworm cases reached 31, with 30 in Texas and one domestic animal case in Lea County, New Mexico.
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USDA APHIS lists 31 confirmed New World screwworm cases in the US, with 21 active and 9 shifted to inactive status.
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A June 30 dog screwworm case was confirmed in Pecos County, Texas, and already moved to inactive status.
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A June 29 cattle screwworm case was confirmed in Uvalde County, Texas, a new county bordering initial Zavala County confirmations.
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A New World screwworm case was confirmed in a bovine in Crockett County, Texas, bypassing active containment barriers.
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First official New World Screwworm detection in the U.S. occurred in Zavala County, Texas on June 3, 2026.