Susceptibility of Ae. aegypti larvae from Thailand to temephos and permethrin with or without synergists.

LC50: Lethal concentration at which 50% of the population is killed; Resistance ratios RR(P) are all compared to Phatthalung while RR(NO) are compared to NO. Synergist ratios are the ratio between the LC50 of the treatment without synergist and the LC50 using each synergist and significant values are marked with *. The synergists used were the P450 inhibitor PBO (piperonyl butoxide, 5-((2-(2-butoxyethoxy) ethoxy) methyl)-6-propyl-1,3-benzodiox-ole), the GST inhibitor DEM (diethyl maleate), and the CCE inhibitor DEF (S,S,S-tributyl phosphorotrithioate).