What Are Flesh Eating Screwworm Symptoms
Flesh eating screwworm symptoms usually begin with a small, painful sore or boil on the skin that does not heal normally. The larvae burrow into living tissue, causing severe inflammation, swelling, and a sensation of movement under the skin. Common early signs include intense itching, sharp pain, redness, and a foul-smelling wound that slowly enlarges CDC Screwworm Overview.
As the infestation progresses, the wound may produce a thick, yellowish discharge and show visible breathing holes. Systemic symptoms can include fever, rapid heart rate, loss of appetite, and fatigue. In severe cases, the infection can destroy surrounding tissue and lead to secondary bacterial infections WHO Myiasis Fact Sheet.
How Doctors Identify Screwworm Infestation
Diagnosis starts with a physical exam where a clinician looks for characteristic larvae in the wound. Physicians may use imaging or laboratory tests to rule out other tropical infections and confirm the presence of screwworm CDC Diagnosis Guidance.
Treatment focuses on removing all larvae, cleaning the wound thoroughly, and managing pain. Doctors often use topical or oral medications to kill remaining parasites and prevent reinfestation. Hospitalization may be required for extensive cases or when the larvae are near the eyes, nose, or throat Mayo Clinic Myiasis.
Prevention and Latest Outbreak Status
Current Global Risk
The United States declared screwworm eradication in 1966, but sporadic cases still appear in travelers returning from endemic regions in Central and South America. The USDA and CDC continue surveillance and rapid response efforts to prevent reestablishment USDA APHIS Screwworm Updates.
Prevention Steps for Travelers
Travelers can reduce risk by using insect repellent, wearing protective clothing, and keeping wounds covered in areas where screwworm is active. Early medical care for any non-healing skin sore is critical to prevent serious tissue damage and complications.
Key Facts at a Glance
Flesh eating screwworm symptoms are treatable when caught early, but delays can lead to severe tissue loss and long-term disability. Public health agencies emphasize reporting suspected cases immediately to local health authorities for proper containment.