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An experimental hut trial have been conducted in Tanzania to evaluate VECTRON™ T500 residual efficacy applied on both concrete and mud huts surfaces against pyrethroid susceptible Anopheles gambiae s.s. and resistant An. gambiae s.s.Muleba-Kis. It provided residual efficacy (>80%) to seven months on concrete substrates and six months on mud. This trial will continue until 12 months after spraying. VECTRON™ T500 also showed good residual efficacy against the local wild free-flying An. arabiensis.

An. gambiae s.s. KISUMU Insecticide susceptible
An. gambiae Muleba-Kis High resistant to pyrethroids

Kilimanjaro Christian Medical University College/ London School of Hygiene & Tropical Medicine

Long residual activity against both susceptible and resistant strains in experimental huts

The red line (80% mortality) is the WHO guidelines (2006) criterion for the number of months of residual efficacy

Study Type Experimental Hut Trial
Location Moshi
Trial Year 2018-2019
Species An. gambiae s.s. KISUMU, An. gambiae s.s.Muleba-Kis
Substrate Concrete, Mud
Trial Institute (+ Researcher) Kilimanjaro Christian Medical University College/ London School of Hygiene & Tropical Medicine
Link to publication doi: 10.1371/journal.pone.0248026. eCollection 2021.
Study Condition/Method 72-hour mosquito mortality tested in 30 min WHO cone bioassays in experimental huts
Study Status Finished
Explanation of Species Susceptible, High resistant to pyrethroids