Seroprevalence of malaria in inhabitants of the urban zone of Antananarivo, Madagascar

<p>Abstract</p> <p>Background</p> <p>Antananarivo, the capital of Madagascar, is located at an altitude of over 1,200 m. The environment at this altitude is not particularly favourable to malaria transmission, but malaria nonetheless remains a major public health proble...

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Main Authors: Rakotomanana Fanjasoa, Randremanana Rindra, Jolivet Laurence, Rakotomalala Emma, Razakandrainibe Romy, Domarle Olivier, Ramarokoto Charles, Soares Jean-Louis, Ariey Frédéric
Format: Article
Language:English
Published: BMC 2006-11-01
Series:Malaria Journal
Online Access:http://www.malariajournal.com/content/5/1/106
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author Rakotomanana Fanjasoa
Randremanana Rindra
Jolivet Laurence
Rakotomalala Emma
Razakandrainibe Romy
Domarle Olivier
Ramarokoto Charles
Soares Jean-Louis
Ariey Frédéric
author_facet Rakotomanana Fanjasoa
Randremanana Rindra
Jolivet Laurence
Rakotomalala Emma
Razakandrainibe Romy
Domarle Olivier
Ramarokoto Charles
Soares Jean-Louis
Ariey Frédéric
author_sort Rakotomanana Fanjasoa
collection DOAJ
description <p>Abstract</p> <p>Background</p> <p>Antananarivo, the capital of Madagascar, is located at an altitude of over 1,200 m. The environment at this altitude is not particularly favourable to malaria transmission, but malaria nonetheless remains a major public health problem. The aim of this study was to evaluate exposure to malaria in the urban population of Antananarivo, by measuring the specific seroprevalence of <it>Plasmodium falciparum</it>.</p> <p>Methods</p> <p>Serological studies specific for <it>P. falciparum </it>were carried out with an indirect fluorescent antibody test (IFAT). In a representative population of Antananarivo, 1,059 healthy volunteers were interviewed and serum samples were taken.</p> <p>Results</p> <p>The seroprevalence of IgG+IgA+IgM was 56.1% and that of IgM was 5.9%. The major risk factor associated with a positive IgG+IgA+IgM IFAT was travel outside Antananarivo, whether in the central highlands or on the coast. The abundance of rice fields in certain urban districts was not associated with a higher seroprevalence.</p> <p>Conclusion</p> <p>Malaria transmission levels are low in Antananarivo, but seroprevalence is high. Humans come into contact with the parasite primarily when travelling outside the city. Further studies are required to identify indigenous risk factors and intra-city variations more clearly.</p>
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spelling doaj.art-c54c851456f6442ca140748197e5cc672022-12-22T02:59:49ZengBMCMalaria Journal1475-28752006-11-015110610.1186/1475-2875-5-106Seroprevalence of malaria in inhabitants of the urban zone of Antananarivo, MadagascarRakotomanana FanjasoaRandremanana RindraJolivet LaurenceRakotomalala EmmaRazakandrainibe RomyDomarle OlivierRamarokoto CharlesSoares Jean-LouisAriey Frédéric<p>Abstract</p> <p>Background</p> <p>Antananarivo, the capital of Madagascar, is located at an altitude of over 1,200 m. The environment at this altitude is not particularly favourable to malaria transmission, but malaria nonetheless remains a major public health problem. The aim of this study was to evaluate exposure to malaria in the urban population of Antananarivo, by measuring the specific seroprevalence of <it>Plasmodium falciparum</it>.</p> <p>Methods</p> <p>Serological studies specific for <it>P. falciparum </it>were carried out with an indirect fluorescent antibody test (IFAT). In a representative population of Antananarivo, 1,059 healthy volunteers were interviewed and serum samples were taken.</p> <p>Results</p> <p>The seroprevalence of IgG+IgA+IgM was 56.1% and that of IgM was 5.9%. The major risk factor associated with a positive IgG+IgA+IgM IFAT was travel outside Antananarivo, whether in the central highlands or on the coast. The abundance of rice fields in certain urban districts was not associated with a higher seroprevalence.</p> <p>Conclusion</p> <p>Malaria transmission levels are low in Antananarivo, but seroprevalence is high. Humans come into contact with the parasite primarily when travelling outside the city. Further studies are required to identify indigenous risk factors and intra-city variations more clearly.</p>http://www.malariajournal.com/content/5/1/106
spellingShingle Rakotomanana Fanjasoa
Randremanana Rindra
Jolivet Laurence
Rakotomalala Emma
Razakandrainibe Romy
Domarle Olivier
Ramarokoto Charles
Soares Jean-Louis
Ariey Frédéric
Seroprevalence of malaria in inhabitants of the urban zone of Antananarivo, Madagascar
Malaria Journal
title Seroprevalence of malaria in inhabitants of the urban zone of Antananarivo, Madagascar
title_full Seroprevalence of malaria in inhabitants of the urban zone of Antananarivo, Madagascar
title_fullStr Seroprevalence of malaria in inhabitants of the urban zone of Antananarivo, Madagascar
title_full_unstemmed Seroprevalence of malaria in inhabitants of the urban zone of Antananarivo, Madagascar
title_short Seroprevalence of malaria in inhabitants of the urban zone of Antananarivo, Madagascar
title_sort seroprevalence of malaria in inhabitants of the urban zone of antananarivo madagascar
url http://www.malariajournal.com/content/5/1/106
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