US EditionUS Confirms First Travel-Linked Human Screwworm Case in Maryland
- In 2025, Maryland confirmed an infection of the New World screwworm parasite in an individual who had recently traveled from Guatemala and received medical treatment within the state.
- The case arose amid a screwworm outbreak that has been intensifying since late 2023 across regions in southern Mexico and countries to its south, leading to heightened alertness in the United States.
- US state veterinarians learned of the Maryland case last week during a CDC call, while prevention measures were promptly implemented in the state.
- In 2025, USDA Secretary Brooke Rollins revealed intentions to establish a facility in Texas dedicated to producing sterile flies as a measure against the pest, which poses a potential economic threat of $1.8 billion to the state's livestock industry if left unchecked.
- This detection challenges US efforts to keep screwworm eradicated since the 1960s and may impact the cattle industry amid record-high market prices and border controls.
181 Articles
181 Articles
A first travel-related case of the "Neuwelt-Schraubenwurms" (New World screwworm) provides attention in the USA. The livestock industry is particularly concerned about this.
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A Maryland resident who traveled to El Salvador has been diagnosed with New World sweeping worm, the first reported case in the United States related to a trip to a country with a current outbreak.
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