New World Screwworm Outbreak Exposes Global Livestock Biosecurity Vulnerabilities
The re-emergence of the New World Screwworm in North and Central America, decades after its successful eradication, has highlighted significant weaknesses in global livestock biosecurity. This outbreak is attributed to a complex interplay of factors, including illegal and informal animal movements, a lack of farmer awareness regarding infestation risks, and a critical shortage of trained personnel in veterinary services. The Food and Agriculture Organization (FAO) emphasizes that the vulnerability is not solely biological but also institutional, stemming from underfunded veterinary capacities, inadequate surveillance systems, and gaps in preparedness. The re-emergence underscores that transboundary pests are becoming more challenging to contain due to climate change, increased global trade, and evolving pest dynamics. The FAO advocates for prevention and preparedness as more cost-effective strategies than post-outbreak response.
