Spatial and temporal dynamics of malaria in Madagascar View Full Text


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Article Info

DATE

2018-12

AUTHORS

Felana A. Ihantamalala, Feno M. J. Rakotoarimanana, Tanjona Ramiadantsoa, Jean Marius Rakotondramanga, Gwenaëlle Pennober, Fanjasoa Rakotomanana, Simon Cauchemez, Charlotte J. E. Metcalf, Vincent Herbreteau, Amy Wesolowski

ABSTRACT

BACKGROUND: Malaria is one of the primary health concerns in Madagascar. Based on the duration and intensity of transmission, Madagascar is divided into five epidemiological strata that range from low to mesoendemic transmission. In this study, the spatial and temporal dynamics of malaria within each epidemiological zone were studied. METHODS: The number of reported cases of uncomplicated malaria from 112 health districts between 2010 and 2014 were compiled and analysed. First, a Standardized Incidence Ratio was calculated to detect districts with anomalous incidence compared to the stratum-level incidence. Building on this, spatial and temporal malaria clusters were identified throughout the country and their variability across zones and over time was analysed. RESULTS: The incidence of malaria increased from 2010 to 2014 within each stratum. A basic analysis showed that districts with more than 50 cases per 1000 inhabitants are mainly located in two strata: East and West. Lower incidence values were found in the Highlands and Fringe zones. The standardization method revealed that the number of districts with a higher than expected numbers of cases increased through time and expanded into the Highlands and Fringe zones. The cluster analysis showed that for the endemic coastal region, clusters of districts migrated southward and the incidence of malaria was the highest between January and July with some variation within strata. CONCLUSION: This study identified critical districts with low incidence that shifted to high incidence and district that were consistent clusters across each year. The current study provided a detailed description of changes in malaria epidemiology and can aid the national malaria programme to reduce and prevent the expansion of the disease by targeting the appropriate areas. More... »

PAGES

58

References to SciGraph publications

  • 2016-12. Multiple causes of an unexpected malaria outbreak in a high-transmission area in Madagascar in MALARIA JOURNAL
  • 2008-07. Immunity to malaria: more questions than answers in NATURE IMMUNOLOGY
  • 2016-12. Contemporary epidemiological overview of malaria in Madagascar: operational utility of reported routine case data for malaria control planning in MALARIA JOURNAL
  • 2015-12. Malaria case in Madagascar, probable implication of a new vector, Anopheles coustani in MALARIA JOURNAL
  • 2017-12. Analysing trends and forecasting malaria epidemics in Madagascar using a sentinel surveillance network: a web-based application in MALARIA JOURNAL
  • 2012-12. Management of uncomplicated malaria in febrile under five-year-old children by community health workers in Madagascar: reliability of malaria rapid diagnostic tests in MALARIA JOURNAL
  • 2015-12. Spatial, temporal, and spatiotemporal analysis of malaria in Hubei Province, China from 2004–2011 in MALARIA JOURNAL
  • 2016-12. Spatiotemporal analysis of dengue fever in Nepal from 2010 to 2014 in BMC PUBLIC HEALTH
  • 2009-12. Space-time variation of malaria incidence in Yunnan province, China in MALARIA JOURNAL
  • 2013-12. Population-level effects of clinical immunity to malaria in BMC INFECTIOUS DISEASES
  • 2009-12. Spatial analysis of malaria incidence at the village level in areas with unstable transmission in Ethiopia in INTERNATIONAL JOURNAL OF HEALTH GEOGRAPHICS
  • 2013-12-11. Ecology and Control of Vector-borne diseases in NONE
  • 2004-12. Analysing the quality of routine malaria data in Mozambique in MALARIA JOURNAL
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    http://scigraph.springernature.com/pub.10.1186/s12936-018-2206-8

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    http://dx.doi.org/10.1186/s12936-018-2206-8

    DIMENSIONS

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    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/29391023


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