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01.12.2012 | Research | Ausgabe 1/2012 Open Access

Malaria Journal 1/2012

Prevalence of malaria infection in Butajira area, south-central Ethiopia

Zeitschrift:
Malaria Journal > Ausgabe 1/2012
Autoren:
Adugna Woyessa, Wakgari Deressa, Ahmed Ali, Bernt Lindtjørn
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​1475-2875-11-84) contains supplementary material, which is available to authorized users.

Competing interests

The authors declare that they have no competing interests.

Authors' contributions

AW contributed to conception and design, acquisition of data, analysis and interpretation of data, and drafting the manuscript. WD contributed to conception and design of the study and reviewed the manuscript. AA contributed to conception and design of the study and reviewed the manuscript. BL contributed to conception and design, analysis and interpretation of data, and reviewed the manuscript. BL, AA, WD and AW reviewed the paper and all authors approved the final version.

Abstract

Background

In 2005, the Ethiopian government launched a massive expansion of the malaria prevention and control programme. The programme was aimed mainly at the reduction of malaria in populations living below 2,000 m above sea level. Global warming has been implicated in the increase in the prevalence of malaria in the highlands. However, there is still a paucity of information on the occurrence of malaria at higher altitudes. The objective of this study was to estimate malaria prevalence in highland areas of south-central Ethiopia, designated as the Butajira area.

Methods

Using a multi-stage sampling technique, 750 households were selected. All consenting family members were examined for malaria parasites in thick and thin blood smears. The assessment was repeated six times for two years (October 2008 to June 2010).

Results

In total, 19,207 persons were examined in the six surveys. From those tested, 178 slides were positive for malaria, of which 154 (86.5%) were positive for Plasmodium vivax and 22 (12.4%) for Plasmodium falciparum; the remaining two (1.1%) showed mixed infections of Plasmodium falciparum and Plasmodium vivax. The incidence of malaria was higher after the main rainy season, both in lower lying and in highland areas. The incidence in the highlands was low and similar for all age groups, whereas in the lowlands, malaria occurred mostly in those of one to nine years of age.

Conclusion

This study documented a low prevalence of malaria that varied with season and altitudinal zone in a highland-fringe area of Ethiopia. Most of the malaria infections were attributable to Plasmodium vivax.
Zusatzmaterial
Authors’ original file for figure 1
12936_2011_2103_MOESM1_ESM.pdf
Authors’ original file for figure 2
12936_2011_2103_MOESM2_ESM.pdf
Authors’ original file for figure 3
12936_2011_2103_MOESM3_ESM.doc
Authors’ original file for figure 4
12936_2011_2103_MOESM4_ESM.doc
Literatur
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