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Am. J. Trop. Med. Hyg., 64(1_suppl), 2001, pp. 12-17
Copyright © 2001 by The American Society of Tropical Medicine and Hygiene

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RESEARCH ARTICLES


The public health impact of chloroquine resistance in Africa

JF Trape
 
ABSTRACT

Between 1978 and 1988 Plasmodium falciparum resistance to chloroquine has been reported in all countries of tropical Africa. Despite the intensification of resistance during the last 2 decades, chloroquine remains in 2000 the first-line treatment for malaria in most of these countries. Here we review published data on the public health impact of antimalarial drug resistance in Africa. These data show that since the late 1980s convincing evidence of a major public health impact of the spread of chloroquine resistance has been available. Hospital studies in various African countries have documented a 2- or 3-fold increase in malaria deaths and admissions for severe malaria, an increase temporally related to the emergence of chloroquine resistance. Data from sentinel demographic surveillance systems in Senegal indicated that mortality attributable to malaria in children increased by as much as 6-fold among populations where low levels of malaria mortality had been achieved because of efficient health services before the emergence of chloroquine resistance. Increasing incidence of severe malarial anemia also contributed to human immunodeficiency virus dissemination. The dramatic impact of chloroquine resistance on malaria mortality has long been underestimated because only a low proportion of malaria attacks are potentially lethal among persons continuously exposed since birth to high levels of transmission. There is an urgent need to change treatment policies in Africa.




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Copyright © 2001 by the American Society of Tropical Medicine and Hygiene.