Screwworm Information
New World screwworm (NWS) is a serious pest of livestock and wildlife.
This invasive pest we previously eradicated from the United States, but has recently been reintroduced (June 2026). Website links below provide information on screwworm, including prevention and treatment for screwworm. Treatment and prevention, as well as reporting requirements, often vary by state - contact animal health officials in your state for state-specific requirements and recommendations.
FEDERAL RESOURCES
STATE RESOURCES
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California Department of Food and Agriculture (CDFA)
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University of California at Riverside
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Florida Department of Agriculture & Consumer Services
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Texas Animal Health Commission
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Texas A&M Agrilife Extension
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New Mexico State University
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University of Tennessee
COMMODITY GROUP RESOURCES
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AVMA
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NCBA
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Swine Health Information Center
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American Sheep Industry Association
Land-Grant University Website Directory
NIFA is the federal partner in a vast network of scientists, educators, and extension staff that address critical issues about agriculture, food, the environment, and communities. NIFA’s key partner is the nation’s Land-Grant University (LGU) System. Discover the specific colleges and universities that support this system; with links to their websites.
Veterinary Entomologists in the US and Canada
Northeast
Southeast
New York:
Jeffrey G. Scott
Cornell University
Ithaca, NY
Tel: (607) 255-7340
E-mail: jgs5@cornell.edu
Website: http://blogs.cornell.edu/scott/
Pennsylvania:
Erika Machtinger
Penn State University
University Park, PA
Tel: (904)-294-2247
E-mail: etm10@psu.edu
Website: https://www.machtingerlab.com/
Central
Arkansas:
Kelly Loftin
University of Arkansas
Fayetteville, AR
Tel: (479) 575-3462
E-mail: kloftin@uaex.edu
Emily McDermott
University of Arkansas
Fayetteville, AR
Tel: (479) 575 6446
Email: emcdermo@uark.edu
Website: www.mcdermottlabuark.com
Florida:
Christopher J. Geden
USDA-ARS-CMAVE
Gainesville, FL
Tel: (352) 374-5919
E-mail: Chris.geden@ars.usda.gov
Jerry Hogsette
USDA-ARS-CMAVE
Gainesville, FL
Tel: (352) 328-6839 (cell)
E-mail: Jerry.Hogsette@ars.usda.gov
Georgia:
Nancy C. Hinkle
University of Georgia
Athens, GA
Tel: (706) 583-8043
E-mail: nhinkle@uga.edu
Website: https://ent.uga.edu/people/faculty/nancy-hinkle.html
Louisiana:
North Carolina:
Wes Watson
North Carolina State University
Raleigh, NC
Tel: (919) 513-2028
E-mail: Wes_Watson@ncsu.edu
Tennessee:
Rebecca (Becky) Trout Fryxell
University of Tennessee
Knoxville, TN
Tel: (865)974-8824
E-mail: RFryxell@utk.edu
Website: https://epp.tennessee.edu/people/
California:
Alec Gerry
University of California
Riverside, CA
E-mail: alec.gerry@ucr.edu
Amy Murillo
University of California
Riverside, CA
Tel: (951) 827-5741
Email: amy.murillo@ucr.edu
Website: https://murillolab.ucr.edu
New Mexico:
Brandon G. Smythe
New Mexico State University
Las Cruces, NM
Tel: (575)646-1111
E-mail: bsmythe@nmsu.edu
Website: https://aces.nmsu.edu/thecenter/verl/contact-information.html
International
West
Kansas:
Dana Nayduch
Lee Cohnstaedt
Nebraska:
Dave Boxler
University of Nebraska
North Platte, NE
Tel: (308) 696-6721
E-mail: Dboxler1@unl.edu
Website: https://epd.unl.edu/profile/dboxler1
Gary Brewer
University of Nebraska
Lincoln, NE
Tel: (402) 472-8040
E-mail: gbrewer2@unl.edu
David Taylor
USDA-ARS-AMRU
Lincoln, NE
Tel: (402) 472-9651
E-mail: Dave.Taylor@ars.usda.gov
Jerry Zhu
USDA-ARS
Lincoln, NE
Tel: (402) 472-7525
E-mail: Jerry.Zhu@ars.usda.gov
Website: https://www.ars.usda.gov/plains-area/lincoln-ne/junwei-zhu/
Oklahoma:
Justin Talley
Oklahoma State University
Stillwater, OK
Tel: (405) 744-9420
E-mail: Justin.Talley@okstate.edu
Texas:
Pia Olafson
USDA-ARS-KBUSLIRL
Kerrville, TX
Tel: (830) 792-0322
E-mail: Pia.olafson@ars.usda.gov
Website: https://www.ars.usda.gov/people-locations/person?person-id=33760
Greta Schuster
Texas A&M University
Kingsville, TX
Tel: (361) 593-4116
E-mail: Greta.Schuster@tamuk.edu
Adalberto A Perez De Leon (Beto)
USDA-ARS-KBUSLIRL
Kerrville, TX
Tel: (830) 792-0304
E-mail: beto.perezdeleon@usda.gov
Sonja Swiger
Texas A&M AgriLife Extension
Stephenville, TX
Tel: (254) 968-4144 (office)
E-mail: slswiger@ag.tamu.edu
Jeffery K. Tomberlin
Texas A&M
College Station, TX
Tel: (979) 845.9718 (office)
E-mail: jktomberlin@tamu.edu
Phillip E. Kaufman
University of Florida
Gainesville, FL
Tel: (352) 273-3975
E-mail: pkaufman@ufl.edu
Website: http://entnemdept.ufl.edu/extension/
Canada:
Dave Beresford
Trent University
Peterborough, Ontario
Tel: (705) 748-1011 ext. 7540
E-mail: davidberesford@trentu.ca
Website: https://beresfordlab.wordpress.com
Kateryn Rochon
University of Manitoba
Winnipeg, Manitoba, Canada
Tel: (204) 474-8640
E-mail: Kateryn_Rochon@umanitoba.ca