Reported Resistance Case(s)

Species: pediculus humanus capitis

Order	Family	Common Name(s)	Group	Host
phthiraptera	pediculidae	head louse	MED	humans

Active Ingredient: malathion

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 121755	Shaugnessy Code: 57701

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G6591	2002	Unspecified	England-- South Shields	Downs, A.M.R., K.A. Stafford, L.P. Hunt, J.C. Ravenscroft, and G.C. Coles. (2002). Widespread insecticide resistance in head lice to the over-the-counter pediculocides in England, and the emergence of carbaryl resistance. Brittish Journal of Dermatology, 146 88-93.
G6592	2002	Unspecified	England-- Leeds	Downs, A.M.R., K.A. Stafford, L.P. Hunt, J.C. Ravenscroft, and G.C. Coles. (2002). Widespread insecticide resistance in head lice to the over-the-counter pediculocides in England, and the emergence of carbaryl resistance. Brittish Journal of Dermatology, 146 88-93.
G6593	2002	Unspecified	England-- Loughborough	Downs, A.M.R., K.A. Stafford, L.P. Hunt, J.C. Ravenscroft, and G.C. Coles. (2002). Widespread insecticide resistance in head lice to the over-the-counter pediculocides in England, and the emergence of carbaryl resistance. Brittish Journal of Dermatology, 146 88-93.
G6594	2002	Unspecified	England-- Exmouth	Downs, A.M.R., K.A. Stafford, L.P. Hunt, J.C. Ravenscroft, and G.C. Coles. (2002). Widespread insecticide resistance in head lice to the over-the-counter pediculocides in England, and the emergence of carbaryl resistance. Brittish Journal of Dermatology, 146 88-93.
G6626	2002	Unspecified	England-- Brystal	Downs, A.M.R., K.A. Stafford, L.P. Hunt, J.C. Ravenscroft, and G.C. Coles. (2002). Widespread insecticide resistance in head lice to the over-the-counter pediculocides in England, and the emergence of carbaryl resistance. Brittish Journal of Dermatology, 146 88-93.
G6627	2002	Unspecified	England-- Bath	Downs, A.M.R., K.A. Stafford, L.P. Hunt, J.C. Ravenscroft, and G.C. Coles. (2002). Widespread insecticide resistance in head lice to the over-the-counter pediculocides in England, and the emergence of carbaryl resistance. Brittish Journal of Dermatology, 146 88-93.

*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.