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Parasite. 2019;26:26. doi: 10.1051/parasite/2019026. Epub 2019 May 1.

Benzoylphenyl ureas as veterinary antiparasitics. An overview and outlook with emphasis on efficacy, usage and resistance.

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Vetparcs GmbH, Zürich 8044, Switzerland.
Elanco Australasia Pty. Limited, Kemps Creek, 2178 NSW, Australia.
Elanco Canada Limited, 150 Research Lane, Suite 120, Guelph, ON N1G 4T2, Canada.


Six benzoylphenyl ureas are currently used in formulations approved as veterinary medicines: diflubenzuron for fly control mainly on cattle, lice and blowfly strike control on sheep, and lice control on farmed salmonids; lufenuron for flea control on dogs and cats and for lice control on farmed salmonids; triflumuron for lice and blowfly strike control on sheep; fluazuron for tick control on cattle; teflubenzuron for lice control on farmed salmon; and novaluron for fly and tick control on cattle and for flea control on dogs. Resistance to diflubenzuron and triflumuron has already been reported for sheep body lice and blowflies, and to fluazuron in cattle ticks. These and other minor veterinary usages, as well as the current status of resistance, are reviewed and perspectives for future opportunities are discussed based on unexplored potentials and threats posed by future resistance development.

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