New World Screwworm outbreak
Jun 21, 2026
Current Affair 1:
New World Screwworm outbreak
News:
The International Atomic Energy Agency (IAEA) and Food and Agriculture Organization of the United Nations (FAO) are stepping up efforts to contain and suppress the re-emergence of New World Screwworm in Central America, Mexico and the United States of America through the application of a nuclear technique.
What is the New World Screwworm (NWS)?
The New World Screwworm (NWS) is a parasitic fly whose larvae infest warm-blooded animals.
- Mechanism of Infection: Female flies lay eggs in open wounds or mucous membranes of animals. Once hatched, the larvae burrow deep into the living tissue, expanding the wounds and inducing severe infections that can prove fatal if left untreated.
- Impact on Economies: Infestations damage hides, cause direct mortality in livestock populations, and severely reduce milk and meat production capacity.
- Drivers of Spread: Changing weather patterns, global connectivity, and unlawful transboundary animal movements have heavily contributed to the pest's current spread.
Nuclear Technology Application: Sterile Insect Technique (SIT)
- The Mechanism: To suppress and contain the pest population over time, international agencies utilize the Sterile Insect Technique (SIT) via a Coordination Research Project (CRP).
- How It Works: SIT uses targeted radiation to sterilize insects. These sterile insects are subsequently released into the wild to mate with wild populations. Because these matings produce zero offspring, the overall pest population is suppressed over time.
- Institutional Coordination: This nuclear-driven agricultural technique is supported by the collaborative efforts of the International Atomic Energy Agency (IAEA) and the Food and Agriculture Organization (FAO) of the United Nations.
