In response to the 2016 Zika outbreak, Aedes aegypti mosquitoes from 38 locations across Puerto Rico were screened using Centers for Disease Control and Prevention bottle bioassays for sensitivity to insecticides used for mosquito control. All populations were resistant to pyrethroids. Naled, an organophosphate, was the most effective insecticide, killing all mosquitoes tested.
Keywords: Aedes aegypti; Puerto Rico; United States; Zika virus; arboviruses; insecticide resistance; mosquitoes; vector-borne infections; viruses.