| insecticide resistance spectra and resistance mechanisms in populations of japanese encephalitis vector mosquitoes, culex tritaeniorhynchus and cx. gelidus, in sri lanka. | culex tritaeniorhynchus giles and cx. gelidus theobald (diptera: culicidae), both vectors of japanese encephalitis, were collected in 1984 and 1998 from two disease endemic localities in sri lanka: anaradhapura and kandy. using wild-caught adult mosquitoes from light traps, log dosage-probit mortality curves for insecticide bioassays were obtained for three insecticides: malathion (organophosphate), propoxur (carbamate) and permethrin (pyrethroid). ld50 values showed that, in 1998, cx. tritaenio ... | 2000 | 11129708 |
| japanese encephalitis in sri lanka--the study of an epidemic: vector incrimination, porcine infection and human disease. | a prospective study of mosquito vectors, porcine infection and human disease was carried out during a japanese encephalitis (je) epidemic in the north central province of sri lanka (november-december 1987) and a subsequent non-epidemic year (1988). the epidemic involved 361 cases of human encephalitis, virologically confirmed by immunoglobulin m enzyme-linked immunosorbent assay (elisa), and was preceded 2-3 weeks earlier by sentinel porcine seroconversion. virus isolation and viral antigen dete ... | 1992 | 1329275 |