his job as an English teacher and Heidi lost her acceptance to study for her master's degree. Heidi was also pregnant and under the Chinese one child policy Chinese law requires women to obtain approval from their work units before conceiving a child. Without approval Heidi could receive no medical help and would be forced to abort her baby, even at full term. Newly released from prison, Bob and Heidi, fled to Hong Kong as tourists, abandoned their group and applied repeatedly for visas to America. They knew that, if they were unable to get out in time, they would be arrested again. They were given permission to emigrate to the United States just a few days before Hong Kong was handed back to the Beijing authorities byEffectiveness of permethrin-impregnated bed nets and curtains for malaria control in a holoendemic area of western Kenya.
The effectiveness of village-wide use of permethrin-impregnated bed nets or eave, window, and door curtains as control measures for Plasmodium falciparum malaria was evaluated during two successive high-transmission seasons in western Kenya. Pairs of villages were assigned to one of three study groups: bed net, curtain, or control. Clinical, parasitologic, and entomologic measures were made from March to July 1990 and again 12 months later. When compared with the controls in 1990 and 1991, we observed a marked reduction in the incidence of P. falciparum infections in children less than six years old in the bed net villages (reduced by 40% and 48%) and a smaller but still significant reduction in the