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Am. J. Trop. Med. Hyg., 32(6), 1983, pp. 1216-1220
Copyright © 1983 by The American Society of Tropical Medicine and Hygiene

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Evaluation of Amodiaquine Treatment of Chloroquine-Resistant Plasmodium Falciparum Malaria on Zanzibar, 1982

Carlos C. Campbell*, David Payne{dagger}, Ira K. Schwartz* AND Omar Juma Khatib{ddagger}
* Division of Parasitic Diseases, Center for Infectious Diseases, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia 30333
{dagger} Research and Technical Intelligence, Malaria Action Programme, World Health Organization, Geneva, Switzerland
{ddagger} Malaria Control Programme, Zanzibar Ministry of Health and Social Welfare, Tanzania

Amodiaquine, a 4-aminoquinoline which has been shown to be effective in treating infections with chloroquine-resistant strains of Plasmodium falciparum, was evaluated against chloroquine-resistant infections in children in Zanzibar, Tanzania, during July 1982. A 25-mg base/kg dosage of amodiaquine produced parasite clearance in 34 of 38 (89%) children in a mean of 2.8 days. When followed for 28 days, 15 of 38 (39%) children were completely cured of their infection as judged by the absence of renewed parasitemia. The parasite clearance rates produced by amodiaquine were significantly higher than those observed in a comparison group of children treated with 25 mg base/kg chloroquine. There was, however, no difference in the cure rates in the chloroquine and amodiaquine groups. Despite the enhanced parasite clearance rate, amodiaquine is not sufficiently more effective against Zanzibari strains of P. falciparum to replace chloroquine. Other alternative drugs must be evaluated to define the optimal malaria therapy regimen on Zanzibar.

Accepted for publication March 25, 1983.






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Copyright © 1983 by the American Society of Tropical Medicine and Hygiene.