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16 - Malaria

from Section 4 - Major common infections

Published online by Cambridge University Press:  05 March 2013

David Mabey
Affiliation:
London School of Hygiene and Tropical Medicine
Geoffrey Gill
Affiliation:
University of Liverpool
Eldryd Parry
Affiliation:
Tropical Health Education Trust
Martin W. Weber
Affiliation:
World Health Organization, Jakarta
Christopher J. M. Whitty
Affiliation:
London School of Hygiene and Tropical Medicine
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Summary

The problem in Africa

Malaria is one of the major diseases of Africa and one of the commonest reasons for outpatient attendance in most hospitals. Over 90 per cent of this is the potentially fatal P. falciparum species. A recent estimate suggested that, in 2007, 182 million African children under 5 with fever were likely to have sought treatment in a public sector clinic of which 78 million (43 per cent) were likely to have been infected with P. falciparum (Gething et al., 2010). The actual number of cases will be higher; in most countries the majority of children with malaria never get to public sector health care.

Malaria is a major cause of severe morbidity and mortality in children and pregnant women throughout Africa between the Sahara and South Africa. Currently, most non-pregnant adults in malaria-endemic Africa have sufficient immunity following repeated exposure to prevent them dying of malaria, so in adults it is a much smaller problem. Immunity to severe malaria cannot be assumed, however, especially in adults from low transmission settings such as urban or highland areas, or where there is good malaria control.

Diagnosed early and correctly, almost all cases of malaria in Africa should be curable with widely available drugs. When definitive treatment is delayed, often due to delayed presentation or treatment with ineffective drugs, malaria can be a severe disease causing significant mortality in children, and adults especially in pregnant women. Since the third edition of this book, the incidence of malaria has dropped significantly in a number of countries in Africa, notably Zambia, parts of Kenya, Zanzibar and parts of Tanzania, Rwanda and The Gambia. Despite this, malaria remains a major public health problem even in these countries and one of the leading causes of mortality in other African countries. The changing epidemiology of malaria is likely to present new challenges over the life-time of this textbook.

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Publisher: Cambridge University Press
Print publication year: 2013

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References

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