The effectiveness of insecticide-treated materials had been unclear, as earlier studies had based their results on the effects on vectors rather than on human morbidity and mortality rates from malaria. In 1988 the UK Medical Research Council began a systematic trial of a combined intervention...

Aid donors and recipients have begun to demand timely, population-based information for programme planning and for measuring health programme performance. Results from trials in Jordan, Syria, Djibouti and People's Democratic Republic of Yemen show that widely-used routine surveys for estimating...