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Lice Outbreaks: Transmission and Avenues for Treatment Quyen Vu. Goals. Understand the main differences between the three types of lice affecting humans Morphology and vector biology Disease risk Most effective treatments Prevention strategies
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Three types of lice:
Head lice: “head-to-head” transmission
Pubic Lice (“Crabs”):
Body lice: humanitarian crises & disenfranchised groups
1. Louse feeds on human infected w/ R. prowazekii
2. R. prowazekii grows in louse’s gut
3. R. prowazekii excreted in louse feces
4. Human scratches louse bite, rubs feces into wound
Fumigation and dusting with chemical insecticides: DDT, 1% malathion, or 1% permethrin.
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