Screwworm - Key Deer Information

Buck fawn pair

Photo credit: Michael Vaughn

USDA and Florida Department of Agriculture and Consumer Services declared on March 23, 2017 that New World Screwworm has been eradicated from the Florida Keys. Intensive key deer monitoring efforts were successfully completed during the spring and summer of 2017.  Passive monitoring will continue indefinitely through driving population monitoring surveys, the multi-agency deer call response hotline, and herd health monitoring in partnership with the Southeastern Cooperative Wildlife Disease Study at University of Georgia's College of Veterinary Medicine. 


Screwworm Impacts on Key Deer:

Total Mortality Count: 135 deer
Last Screwworm Related Death: January 7, 2017


Frequently Asked Questions - Screwworm and Key Deer

Think you found a screwworm fly or larva?  Check out this brochure for more info.  Report suspected cases in Key deer to the FWC Response Hotline (305-470-6863).  Report suspected cases in pets or livestock to the Florida Department of Agriculture and Consumer Services by calling 1-800-HELP-FLA.

USDA APHIS Publication: New World Screwworm Factsheet (Published May 2014)


Key deer screwworm final report - Phase I (Fall 2016)

Key deer screwworm final report - Phase II (Spring/Summer 2017)



English Version 
Spanish Version



USDA Announces Eradication of New World Screwworm in Florida (March 23, 2017)

Radio-Collaring of Key Deer to Begin Soon(December 22, 2016)

National Key Deer Refuge Uses Population Studies to Drive Management Actions (November 24, 2016)

National Key Deer Refuge Established Medication Stations for Backcountry Key Deer Population 
(November 4, 2016)

U.S. Fish & Wildlife Service Partnering With Public to Help Save Endangered Key Deer 
(October 31, 2016)

U.S. Fish & Wildlife Service Veterinarians Begin Care for Key Deer with Screwworm (
October 30, 2016)

Building an Ark for the Key Deer (October 29, 2016)

For more information on New World screwworm: 

The United States Department of Agriculture's (USDA) Animal and Plant Health Inspection Service (APHIS) confirmed the presence of New World screwworm in Key deer from a wildlife refuge in Big Pine Key, Florida. USDA's National Veterinary Services Laboratories in Ames, Iowa, confirms this is a local infestation of New World screwworm. This is the first local infestation in the United States in more than 30 years. In response to this infestation, Florida Commissioner of Agriculture Adam H. Putnam declared an agricultural state of emergency in Monroe County, Florida. More information on the screwworm is available at Florida Department of Agriculture and Consumer Services website.