The Global Malaria Eradication Campaign, started in 1955 by the
World Health Organization, was based on the widespread use of antimalarial
drugs and dichlorodiphenyltrichloroethane (DDT) wettable
powder (WP) for indoor and outdoor spraying against
mosquitoes (Trigg and Kondrachine, 1998). In Oman, 137,034 kg of
DDT (75% WP) were sprayed indoors in selected villages in 28 districts
between 1976 and 1992 according to WHO rules. Shinas,
Dank and Rustaq were the districts were DDT was sprayed most
and over a longer period. DDT was not used for outdoor mosquito
control in Oman. In 1992 the use of DDT was stopped (except for
some isolated uses for the control of sand flies from 1994 to 1998)
until it was completely banned in Oman in 2001. After 1992, DDT
has been replaced by organophosphates and synthetic pyrethroids
in Oman