A Maryland resident has been diagnosed with the first confirmed case of screwworm in the US this year. This parasite, which mainly infests animals, is now spreading north from Central America, raising concerns about potential risks to humans and livestock. Curious about what screwworm is, how it infects people, and what the US authorities are doing? Keep reading to find out everything you need to know about this emerging threat.
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What is screwworm and how does it infect humans?
Screwworm is a parasitic fly whose larvae infest warm-blooded animals, including humans. The larvae burrow into tissue, causing severe damage and infections. While it primarily affects livestock, recent cases show it can also infect humans, especially those in contact with infested animals or in regions where the parasite is spreading.
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Why is screwworm spreading in the US now?
Screwworm has been re-emerging in Central America and Mexico after years of eradication. Rising detections in these regions, combined with climate changes and increased travel, have led to the parasite moving northward. US authorities are actively monitoring and taking measures to prevent its spread into the country.
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What are the symptoms and risks of screwworm infection?
Symptoms of screwworm infection include painful tissue wounds, swelling, and the presence of larvae in the affected area. If untreated, it can lead to severe tissue destruction and secondary infections. The risk to humans is generally low but increases with exposure to infested animals or contaminated environments.
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How are US authorities responding to this new threat?
US authorities have suspended livestock imports from Mexico, increased surveillance, and are building a sterile fly production facility to control the spread of screwworm. These measures aim to contain the parasite and prevent it from establishing a foothold in the US population.
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Can screwworm be eradicated again like before?
Yes, with coordinated efforts such as sterile insect techniques and strict quarantine measures, screwworm can be controlled and eradicated. However, ongoing vigilance is essential to prevent re-establishment, especially as the parasite spreads from regions where it is currently active.
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Should I be worried about screwworm if I travel to affected areas?
Travelers to Central America or Mexico should be cautious, especially if they work with animals or spend time outdoors. Practicing good hygiene, avoiding contact with infested animals, and seeking medical attention if you notice wounds or unusual symptoms can help reduce your risk.