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Florida Farm Bureau
Okeechobee Co Cattle

New World Screwworm

View this page for up-to-date resources and information on the New World screwworm (NWS).

Get the Facts

The USDA is leading a coordinated response to combat NWS, a serious pest of livestock and wildlife.
USDA

USDA Response & Policy Information

The materials on this page can be used to prepare for and respond to an outbreak of NWS.
USDA

Notice From FDACS

FDACS offers resources to help prevent, identify and respond to NWS outbreaks in Florida.
FDACS

F A Q s

What is the New World screwworm?: The New World screwworm is a fly whose larvae feed on warm-blooded animals, including livestock, wildlife and pets. NWS larvae lays eggs near open wounds or mucous membranes, causing severe and often deadly wounds if untreated.

How will NWS affect our food supply?: NWS does not affect meat or produce and is not a food safety issue. The U.S. food supply remains safe. The current risk to animals and people in the United States is very low.

Where are the NWS outbreaks?: View the USDA’s dashboard for a current snapshot of confirmed NWS detections.

What signs of NWS do I look for in my livestock?: Look for larvae and/or eggs around wounds and body openings. Affected animals may become depressed, stop eating or separate themselves from other animals or people. Learn more here.