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01.12.2012 | Research | Ausgabe 1/2012 Open Access

Malaria Journal 1/2012

Malaria resurgence: a systematic review and assessment of its causes

Zeitschrift:
Malaria Journal > Ausgabe 1/2012
Autoren:
Justin M Cohen, David L Smith, Chris Cotter, Abigail Ward, Gavin Yamey, Oliver J Sabot, Bruno Moonen
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​1475-2875-11-122) contains supplementary material, which is available to authorized users.

Competing interests

The Clinton Health Access Initiative has received funding from the Bill and Melinda Gates Foundation and the Global Health Group at University of California, San Francisco to support national malaria control programmes in maintaining and extending their gains against malaria; GY declares that the Evidence to Policy Initiative has received financial support from the Global Fund to Fight AIDS, Tuberculosis and Malaria.

Authors’ contributions

JMC and OJS conceived of this review. JMC, CC, and AW conducted the review and analysis. DLS, GY, BM, and OJS participated in the interpretation and presentation of the results and contributed to the writing and structure of the manuscript. JMC drafted the manuscript. All authors read and approved the final manuscript.

Abstract

Background

Considerable declines in malaria have accompanied increased funding for control since the year 2000, but historical failures to maintain gains against the disease underscore the fragility of these successes. Although malaria transmission can be suppressed by effective control measures, in the absence of active intervention malaria will return to an intrinsic equilibrium determined by factors related to ecology, efficiency of mosquito vectors, and socioeconomic characteristics. Understanding where and why resurgence has occurred historically can help current and future malaria control programmes avoid the mistakes of the past.

Methods

A systematic review of the literature was conducted to identify historical malaria resurgence events. All suggested causes of these events were categorized according to whether they were related to weakened malaria control programmes, increased potential for malaria transmission, or technical obstacles like resistance.

Results

The review identified 75 resurgence events in 61 countries, occurring from the 1930s through the 2000s. Almost all resurgence events (68/75 = 91%) were attributed at least in part to the weakening of malaria control programmes for a variety of reasons, of which resource constraints were the most common (39/68 = 57%). Over half of the events (44/75 = 59%) were attributed in part to increases in the intrinsic potential for malaria transmission, while only 24/75 (32%) were attributed to vector or drug resistance.

Conclusions

Given that most malaria resurgences have been linked to weakening of control programmes, there is an urgent need to develop practical solutions to the financial and operational threats to effectively sustaining today’s successful malaria control programmes.
Zusatzmaterial
Authors’ original file for figure 1
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Authors’ original file for figure 3
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Authors’ original file for figure 5
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Literatur
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