The insecticide DDT has been an effective and affordable means of malaria control in many countries, but pressure for its use to be banned is mounting. Here, Chris Curtis and Jo Lines take a critical look at evidence that links house spraying by DDT with harm to the environment and human health, and stress the need for resources for alternatives to DDT to be made available to countries that wou...

Twenty-eight crossbred 2-year-old ewes were used · to determine the effects of pregnancy and lacta­ tion on the body storage of DDT and dieldrin and on their elimination in milk. Pregnancy did not significantly affect total DDT degradation in ewes, but significantly affected dieldrin metaoo­ lism. Body fat from pregnant animals averaged higher in dieldrin concentration at parturition than did t...

Three strains of Aedes aegypti mosquitos viz (i) CRS, refractory to Chikungunya (CHIK) virus by oral route of infection but susceptible to DDT (2) CSS, susceptible to CHIK virus and also susceptible to DDT (3) CSS-DDTR, susceptible to CHIK virus but resistant to DDT, were examined for the effect of sublethal dosages of DDT and deltamethrin on their fecundity. Biochemical analysis showed that th...

  Background :Older adults with cerebrovascular accident (CVA) show evidence of auditory and speech perception problems. In present study, it was examined whether these problems are due to impairments of concurrent auditory segregation procedure which is the basic level of auditory scene analysis and auditory organization in auditory scenes with competing sounds.   Methods : Concurrent auditory...

The in vitro transfer of DDT through various media to rat adipose tissue was examined. About 15% of DDT was transferred through Krebs-Ringer solution to the tissue slices after 2-hr incubation at 37 degrees C. The addition of albumin accelerated the transfer of DDT proportionally to the concentrations up to 1.0%. Hemoglobin and gamma-globulin showed a lesser accelerating activity, but protamine...

(continued inside) R SUMMARY ecent work by the Centers for Disease Control (CDC) on the leukemia cluster investigation in Churchill County, Nevada found the chemical DDE in relatively high concentrations in urine samples. DDE is produced by natural degradation of the pesticide DDT. The pesticide has been out of use in the United States for more than three decades, but it persists in the environ...

DDT is used for indoor residual spraying (IRS) in Limpopo Province, northern South Africa to control malaria. Through IRS, DDT may reach the outdoor environment via dust and air and from possible spillages during application. In this area the local people consume domestic chickens, wild fish or birds. Fish from the river catchment and impoundments seem to be the major source of protein intake. ...

BACKGROUND The insecticide dichlorodiphenyltrichloroethane (DDT) has been used for malaria vector control in the northern and eastern parts of the Vhembe District of Limpopo Province, South Africa, since 1945. Bioaccumulation of DDT raises concern because it reportedly affects thyroid function. OBJECTIVE Our objective was to investigate the association between DDT uptake (as reflected in plas...