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Mass Drug Administration Trial to Eliminate Lymphatic Filariasis in Papua New Guinea: Changes in Microfilaremia, Filarial Antigen, and Bm14 Antibody after Cessation

Identifieur interne : 003936 ( Pmc/Checkpoint ); précédent : 003935; suivant : 003937

Mass Drug Administration Trial to Eliminate Lymphatic Filariasis in Papua New Guinea: Changes in Microfilaremia, Filarial Antigen, and Bm14 Antibody after Cessation

Auteurs : Daniel J. Tisch ; Moses J. Bockarie ; Zachary Dimber ; Benson Kiniboro ; Nandao Tarongka ; Fred E. Hazlett ; Will Kastens ; Michael P. Alpers ; James W. Kazura

Source :

RBID : PMC:2590750

Abstract

Laboratory tools to monitor infection burden are important to evaluate progress and determine endpoints in programs to eliminate lymphatic filariasis. We evaluated changes in Wuchereria bancrofti microfilaria, filarial antigen and Bm14 antibody in individuals who participated in a five-year mass drug administration trial in Papua New Guinea. Comparing values before treatment and one year after four annual treatments, the proportion of microfilaria positive individuals declined to the greatest degree, with less marked change in antibody and antigen rates. Considering children as sentinel groups who reflect recent transmission intensity, children surveyed before the trial were more frequently microfilaria and antibody positive than those examined one year after the trial stopped. In contrast, antigen positive rates were similar in the two groups. All infection indicators continued to decline five years after cessation of mass drug administration; Bm14 antibody persisted in the greatest proportion of individuals. These data suggest that Bm14 antibody may be a sensitive test to monitor continuing transmission during and after mass drug administration aimed at eliminating transmission of lymphatic filariasis.


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PubMed: 18256431
PubMed Central: 2590750


Affiliations:


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PMC:2590750

Le document en format XML

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<name sortKey="Hazlett, Fred E" sort="Hazlett, Fred E" uniqKey="Hazlett F" first="Fred E." last="Hazlett">Fred E. Hazlett</name>
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<p id="P2">Laboratory tools to monitor infection burden are important to evaluate progress and determine endpoints in programs to eliminate lymphatic filariasis. We evaluated changes in
<italic>Wuchereria bancrofti</italic>
microfilaria, filarial antigen and Bm14 antibody in individuals who participated in a five-year mass drug administration trial in Papua New Guinea. Comparing values before treatment and one year after four annual treatments, the proportion of microfilaria positive individuals declined to the greatest degree, with less marked change in antibody and antigen rates. Considering children as sentinel groups who reflect recent transmission intensity, children surveyed before the trial were more frequently microfilaria and antibody positive than those examined one year after the trial stopped. In contrast, antigen positive rates were similar in the two groups. All infection indicators continued to decline five years after cessation of mass drug administration; Bm14 antibody persisted in the greatest proportion of individuals. These data suggest that Bm14 antibody may be a sensitive test to monitor continuing transmission during and after mass drug administration aimed at eliminating transmission of lymphatic filariasis.</p>
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<xref ref-type="corresp" rid="cor1">*</xref>
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<aff id="A1">Center for Global Health and Diseases, Case Western Reserve University, Cleveland, Ohio; Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea; Centre for International Health, Curtin University of Technology, Perth, Australia</aff>
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<label>*</label>
Address correspondence to James W. Kazura, Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH 44106-7286. E-mail
<email>jxk14@po.cwru.edu</email>
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<p id="P1">Authors’ addresses: Daniel J. Tisch, Moses J. Bockarie, Fred E. Hazlett, Will Kastens, and James W. Kazura, Case Western Reserve University, Cleveland, OH. Zachary Dimber, Benson Kiniboro, and Nandao Tarongka, Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea. Michael P. Alpers, Curtin University of Technology, Perth, Australia.</p>
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<volume>78</volume>
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<p id="P2">Laboratory tools to monitor infection burden are important to evaluate progress and determine endpoints in programs to eliminate lymphatic filariasis. We evaluated changes in
<italic>Wuchereria bancrofti</italic>
microfilaria, filarial antigen and Bm14 antibody in individuals who participated in a five-year mass drug administration trial in Papua New Guinea. Comparing values before treatment and one year after four annual treatments, the proportion of microfilaria positive individuals declined to the greatest degree, with less marked change in antibody and antigen rates. Considering children as sentinel groups who reflect recent transmission intensity, children surveyed before the trial were more frequently microfilaria and antibody positive than those examined one year after the trial stopped. In contrast, antigen positive rates were similar in the two groups. All infection indicators continued to decline five years after cessation of mass drug administration; Bm14 antibody persisted in the greatest proportion of individuals. These data suggest that Bm14 antibody may be a sensitive test to monitor continuing transmission during and after mass drug administration aimed at eliminating transmission of lymphatic filariasis.</p>
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<name sortKey="Dimber, Zachary" sort="Dimber, Zachary" uniqKey="Dimber Z" first="Zachary" last="Dimber">Zachary Dimber</name>
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