Publication:
The impact of human reservoir of malaria at a community-level on individual malaria occurrence in a low malaria transmission setting along the Thai-Myanmar border

dc.contributor.authorSaranath Lawpoolsrien_US
dc.contributor.authorIrwin F. Chavezen_US
dc.contributor.authorSurapon Yimsamranen_US
dc.contributor.authorSupalap Puangsa-Arten_US
dc.contributor.authorNipon Thanyavanichen_US
dc.contributor.authorWanchai Maneeboonyangen_US
dc.contributor.authorWuthichai Chaimungkunen_US
dc.contributor.authorPratap Singhasivanonen_US
dc.contributor.authorJames H. Maguireen_US
dc.contributor.authorLaura L. Hungerforden_US
dc.contributor.otherMahidol Universityen_US
dc.contributor.otherUniversity of Maryland School of Medicineen_US
dc.date.accessioned2018-09-24T09:06:14Z
dc.date.available2018-09-24T09:06:14Z
dc.date.issued2010-05-28en_US
dc.description.abstractBackground: The probability of contracting malaria in a given individual is determined not only by the individual's characteristics, but also the ecological factors that characterize the level of human-vector contact in the population. Examination of the relationship between "individual" and "supra-individual" variables over time is important for understanding the local malaria epidemiology. This is essential for planning effective intervention strategies specifically for each location. Methods. A retrospective cohort study was conducted, which followed a community-cohort of about 3,500 residents in seven hamlets along the Thai-Myanmar border between 1999 and 2006. Potential malaria determinants measured at different levels (temporal variables, individual variables, and hamlet variables) were incorporated into multilevel models to estimate their effects on an individual's risk of malaria attack. Results: The monthly minimum temperature was significantly associated with the seasonal variation of malaria risk. An individual risk of malaria attack decreased by about 50% during the period that active surveillance was conducted; an additional 15% and 25% reduction of Plasmodium falciparum and Plasmodium vivax incidence, respectively, was observed after the use of artesunate-mefloquine combination therapy (ACT) for treatment of P. falciparum. Male children (age < 16 years old) were at highest risk of both P. falciparum and P. vivax attack. An increase in the hamlet's incidence of P. falciparum and P. vivax by 1 per 100 persons in a previous month resulted in 1.14 and 1.34 times increase in the risk of P. falciparum and P. vivax, respectively, among individuals in a particular hamlet. Conclusion: In a small area with low malaria transmission intensity, the variation in mosquito abundance is relatively similar across the residential areas; incidence of malaria between hamlets, which reflects the community level of human infectious reservoirs, is an important predictor for the malaria risk among individuals within these hamlets. Therefore, local malaria control strategies should focus on interventions that aim to reduce the gametocyte carriage in the population, such as early detection and treatment programmes and the use of ACT for P. falciparum. © 2010 Lawpoolsri et al; licensee BioMed Central Ltd.en_US
dc.identifier.citationMalaria Journal. Vol.9, No.1 (2010)en_US
dc.identifier.doi10.1186/1475-2875-9-143en_US
dc.identifier.issn14752875en_US
dc.identifier.other2-s2.0-77952617343en_US
dc.identifier.urihttps://repository.li.mahidol.ac.th/handle/20.500.14594/29234
dc.rightsMahidol Universityen_US
dc.rights.holderSCOPUSen_US
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77952617343&origin=inwarden_US
dc.subjectImmunology and Microbiologyen_US
dc.subjectMedicineen_US
dc.titleThe impact of human reservoir of malaria at a community-level on individual malaria occurrence in a low malaria transmission setting along the Thai-Myanmar borderen_US
dc.typeArticleen_US
dspace.entity.typePublication
mu.datasource.scopushttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77952617343&origin=inwarden_US

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