New World Screwworm: Experts Warn of Deadly Flesh-Eating Larvae in US

Understanding New World Screwworm

• 💡 The New World Screwworm is a parasitic fly whose larvae feed on live tissue, causing painful infestations in humans and animals.
• ⚠️ Females lay 200-300 eggs on open wounds, and the maggots can cause fatal secondary bacterial infections within 7-14 days.

Current Outbreak and Spread

• 🌍 While there are no current cases in Florida, a human infection was recently confirmed in Maryland in a patient returning from El Salvador.
• 📈 The pest is a significant concern due to outbreaks in Mexico and countries across Central and South America, with a natural tendency to move north.
• 🐄 Historically, the screwworm caused devastating economic impacts in the US, costing an estimated $1.8 billion (adjusted for inflation) and affecting 7 million cattle in the 1960s.

Prevention and Detection

• 🐾 The screwworm can affect livestock, household pets, and humans, with symptoms including progressing larvae in wounds, anorexia, and lethargy.
• 🔬 The most effective approach to stop the spread is sterilizing flies, with a facility planned in Texas to produce up to 300 million sterile flies.
• ✈️ For travelers in affected areas, it's crucial to keep wounds clean and protected.
• 🎯 The goal is early detection and intervention, not to cause panic, as the current risk to the public is low.