Le SIDA au Ghana (serveur d'exploration)

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A Cross-Sectional Study of ‘Yaws’ in Districts of Ghana Which Have Previously Undertaken Azithromycin Mass Drug Administration for Trachoma Control

Identifieur interne : 000014 ( Pmc/Curation ); précédent : 000013; suivant : 000015

A Cross-Sectional Study of ‘Yaws’ in Districts of Ghana Which Have Previously Undertaken Azithromycin Mass Drug Administration for Trachoma Control

Auteurs : Rosanna Ghinai [Royaume-Uni] ; Philip El-Duah [Ghana] ; Kai-Hua Chi [États-Unis] ; Allan Pillay [États-Unis] ; Anthony W. Solomon [Royaume-Uni] ; Robin L. Bailey [Royaume-Uni] ; Nsiire Agana [Ghana] ; David C. W. Mabey [Royaume-Uni] ; Cheng-Yen Chen [États-Unis] ; Yaw Adu-Sarkodie [Ghana] ; Michael Marks [Royaume-Uni]

Source :

RBID : PMC:4310597

Abstract

Yaws, caused by Treponema pallidum ssp. pertenue, is reportedly endemic in Ghana. Mass distribution of azithromycin is now the cornerstone of the WHO yaws eradication campaign. Mass distribution of azithromycin at a lower target dose was previously undertaken in two regions of Ghana for the control of trachoma. Ongoing reporting of yaws raises the possibility that resistance may have emerged in T. pallidum pertenue, or that alternative infections may be responsible for some of the reported cases. We conducted a cross-sectional survey in thirty communities in two districts of Ghana where MDA for trachoma had previously been conducted. Children aged 5–17 years with ulcerative lesions compatible with yaws were enrolled. Samples for treponemal serology and lesion PCR were collected from all children. 90 children with 98 lesions were enrolled. Syphilis serology was negative in all of them. PCR for T. pallidum ssp pertenue was negative in all children, but Haemophilus ducreyi DNA was detected in 9 lesions. In these communities, previously treated for trachoma, we found no evidence of ongoing transmission of yaws. H. ducreyi was associated with a proportion of skin lesions, but the majority of lesions remain unexplained. Integration of diagnostic testing into both pre and post-MDA surveillance systems is required to better inform yaws control programmes.


Url:
DOI: 10.1371/journal.pntd.0003496
PubMed: 25632942
PubMed Central: 4310597

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PMC:4310597

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<p>Yaws, caused by
<italic>Treponema pallidum</italic>
ssp.
<italic>pertenue</italic>
, is reportedly endemic in Ghana. Mass distribution of azithromycin is now the cornerstone of the WHO yaws eradication campaign. Mass distribution of azithromycin at a lower target dose was previously undertaken in two regions of Ghana for the control of trachoma. Ongoing reporting of yaws raises the possibility that resistance may have emerged in
<italic>T. pallidum</italic>
pertenue, or that alternative infections may be responsible for some of the reported cases. We conducted a cross-sectional survey in thirty communities in two districts of Ghana where MDA for trachoma had previously been conducted. Children aged 5–17 years with ulcerative lesions compatible with yaws were enrolled. Samples for treponemal serology and lesion PCR were collected from all children. 90 children with 98 lesions were enrolled. Syphilis serology was negative in all of them. PCR for
<italic>T. pallidum</italic>
ssp
<italic>pertenue</italic>
was negative in all children, but
<italic>Haemophilus ducreyi</italic>
DNA was detected in 9 lesions. In these communities, previously treated for trachoma, we found no evidence of ongoing transmission of yaws.
<italic>H. ducreyi</italic>
was associated with a proportion of skin lesions, but the majority of lesions remain unexplained. Integration of diagnostic testing into both pre and post-MDA surveillance systems is required to better inform yaws control programmes.</p>
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<pmc article-type="research-article">
<pmc-dir>properties open_access</pmc-dir>
<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">PLoS Negl Trop Dis</journal-id>
<journal-id journal-id-type="iso-abbrev">PLoS Negl Trop Dis</journal-id>
<journal-id journal-id-type="publisher-id">plos</journal-id>
<journal-id journal-id-type="pmc">plosntds</journal-id>
<journal-title-group>
<journal-title>PLoS Neglected Tropical Diseases</journal-title>
</journal-title-group>
<issn pub-type="ppub">1935-2727</issn>
<issn pub-type="epub">1935-2735</issn>
<publisher>
<publisher-name>Public Library of Science</publisher-name>
<publisher-loc>San Francisco, CA USA</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="pmid">25632942</article-id>
<article-id pub-id-type="pmc">4310597</article-id>
<article-id pub-id-type="publisher-id">PNTD-D-14-01883</article-id>
<article-id pub-id-type="doi">10.1371/journal.pntd.0003496</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Research Article</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>A Cross-Sectional Study of ‘Yaws’ in Districts of Ghana Which Have Previously Undertaken Azithromycin Mass Drug Administration for Trachoma Control</article-title>
<alt-title alt-title-type="running-head">Post MDA ‘Yaws’ in Ghana</alt-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Ghinai</surname>
<given-names>Rosanna</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
<xref ref-type="other" rid="econtrib001">
<sup></sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>El-Duah</surname>
<given-names>Philip</given-names>
</name>
<xref ref-type="aff" rid="aff002">
<sup>2</sup>
</xref>
<xref ref-type="other" rid="econtrib001">
<sup></sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Chi</surname>
<given-names>Kai-Hua</given-names>
</name>
<xref ref-type="aff" rid="aff003">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Pillay</surname>
<given-names>Allan</given-names>
</name>
<xref ref-type="aff" rid="aff003">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Solomon</surname>
<given-names>Anthony W.</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff004">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Bailey</surname>
<given-names>Robin L.</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff004">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Agana</surname>
<given-names>Nsiire</given-names>
</name>
<xref ref-type="aff" rid="aff005">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Mabey</surname>
<given-names>David C. W.</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff004">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Chen</surname>
<given-names>Cheng-Yen</given-names>
</name>
<xref ref-type="aff" rid="aff003">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" equal-contrib="yes">
<name>
<surname>Adu-Sarkodie</surname>
<given-names>Yaw</given-names>
</name>
<xref ref-type="aff" rid="aff002">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" equal-contrib="yes">
<name>
<surname>Marks</surname>
<given-names>Michael</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff004">
<sup>4</sup>
</xref>
<xref ref-type="corresp" rid="cor001">*</xref>
</contrib>
</contrib-group>
<aff id="aff001">
<label>1</label>
<addr-line>Clinical Research Department, London School of Hygiene and Tropical Medicine, London, United Kingdom</addr-line>
</aff>
<aff id="aff002">
<label>2</label>
<addr-line>Department of Clinical Microbiology, School of Medical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana</addr-line>
</aff>
<aff id="aff003">
<label>3</label>
<addr-line>Laboratory Reference and Research Branch, Division of STD Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD and Tuberculosis Prevention Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America</addr-line>
</aff>
<aff id="aff004">
<label>4</label>
<addr-line>Hospital for Tropical Diseases, University College London Hospitals NHS Trust, London, United Kingdom</addr-line>
</aff>
<aff id="aff005">
<label>5</label>
<addr-line>Public Health Division, Ghana Health Service, Accra, Ghana</addr-line>
</aff>
<contrib-group>
<contrib contrib-type="editor">
<name>
<surname>Lammie</surname>
<given-names>Patrick J.</given-names>
</name>
<role>Editor</role>
<xref ref-type="aff" rid="edit1"></xref>
</contrib>
</contrib-group>
<aff id="edit1">
<addr-line>Centers for Disease Control and Prevention, UNITED STATES</addr-line>
</aff>
<author-notes>
<fn fn-type="conflict" id="coi001">
<p>The authors have declared that no competing interests exist.</p>
</fn>
<fn fn-type="con" id="contrib001">
<p>Conceived and designed the experiments: MM YAS DCWM NA RLB AWS. Performed the experiments: RG PED KHC AP CYC. Analyzed the data: RG PED KHC AP CYC MM YAS DCWM NA RLB AWS. Contributed reagents/materials/analysis tools: KHC AP CYC YAS MM. Wrote the paper: RG PED KHC AP CYC MM YAS DCWM NA RLB AWS.</p>
</fn>
<fn fn-type="other" id="econtrib001">
<p>‡ These authors contributed equally to this work.</p>
</fn>
<corresp id="cor001">* E-mail:
<email>michael.marks@lshtm.ac.uk</email>
</corresp>
</author-notes>
<pub-date pub-type="collection">
<month>1</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>29</day>
<month>1</month>
<year>2015</year>
</pub-date>
<volume>9</volume>
<issue>1</issue>
<elocation-id>e0003496</elocation-id>
<history>
<date date-type="received">
<day>24</day>
<month>10</month>
<year>2014</year>
</date>
<date date-type="accepted">
<day>23</day>
<month>12</month>
<year>2014</year>
</date>
</history>
<permissions>
<license xlink:href="https://creativecommons.org/publicdomain/zero/1.0/">
<license-p>This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the
<ext-link ext-link-type="uri" xlink:href="https://creativecommons.org/publicdomain/zero/1.0/">Creative Commons CCO</ext-link>
public domain dedication</license-p>
</license>
</permissions>
<self-uri content-type="pdf" xlink:type="simple" xlink:href="pntd.0003496.pdf"></self-uri>
<abstract>
<p>Yaws, caused by
<italic>Treponema pallidum</italic>
ssp.
<italic>pertenue</italic>
, is reportedly endemic in Ghana. Mass distribution of azithromycin is now the cornerstone of the WHO yaws eradication campaign. Mass distribution of azithromycin at a lower target dose was previously undertaken in two regions of Ghana for the control of trachoma. Ongoing reporting of yaws raises the possibility that resistance may have emerged in
<italic>T. pallidum</italic>
pertenue, or that alternative infections may be responsible for some of the reported cases. We conducted a cross-sectional survey in thirty communities in two districts of Ghana where MDA for trachoma had previously been conducted. Children aged 5–17 years with ulcerative lesions compatible with yaws were enrolled. Samples for treponemal serology and lesion PCR were collected from all children. 90 children with 98 lesions were enrolled. Syphilis serology was negative in all of them. PCR for
<italic>T. pallidum</italic>
ssp
<italic>pertenue</italic>
was negative in all children, but
<italic>Haemophilus ducreyi</italic>
DNA was detected in 9 lesions. In these communities, previously treated for trachoma, we found no evidence of ongoing transmission of yaws.
<italic>H. ducreyi</italic>
was associated with a proportion of skin lesions, but the majority of lesions remain unexplained. Integration of diagnostic testing into both pre and post-MDA surveillance systems is required to better inform yaws control programmes.</p>
</abstract>
<abstract abstract-type="summary">
<title>Author Summary</title>
<p>Yaws is a chronic bacterial infection of the skin and bones that is endemic in Ghana. Since 2012, mass distribution of the antibiotic azithromycin has become the cornerstone of the WHO yaws eradication campaign. Accurate surveillance data are necessary to guide decisions about where MDA is required. Many national surveillance systems report only clinical cases without laboratory confirmation, which may lead to misdiagnosis. Mass distribution of azithromycin, at a lower dose than is used for yaws, is also used in the control of the eye disease trachoma. Between 2001 and 2008, two regions of Ghana undertook distribution of azithromycin to eliminate trachoma. These regions still report cases of yaws, and it is unclear if these are due to drug resistant yaws or other causes. We conducted a survey of patients with skin ulcers that looked like yaws in one of these regions of Ghana. Blood tests for yaws were negative in all the individuals examined and molecular testing of the ulcers did not show evidence of yaws caused by drug resistant
<italic>Treponema pallidum</italic>
ssp.
<italic>pertenue</italic>
. Our data suggest that previous treatment for trachoma may have also treated yaws in these districts. These findings highlight the need for yaws control programmes to integrate diagnostic testing into surveillance.</p>
</abstract>
<funding-group>
<funding-statement>Costs of fieldwork for this study were supported by a grant from the Royal Society for Tropical Medicine and Hygiene (Small Grant Ref 000409). MM was supported by a Wellcome Trust Clinical Research Fellowship (102807). AWS was supported by a Wellcome Trust Intermediate Clinical Fellowship (098521). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.</funding-statement>
</funding-group>
<counts>
<fig-count count="2"></fig-count>
<table-count count="2"></table-count>
<page-count count="9"></page-count>
</counts>
<custom-meta-group>
<custom-meta id="data-availability">
<meta-name>Data Availability</meta-name>
<meta-value>All relevant data are within the paper and its Supporting Information files.</meta-value>
</custom-meta>
</custom-meta-group>
</article-meta>
<notes>
<title>Data Availability</title>
<p>All relevant data are within the paper and its Supporting Information files.</p>
</notes>
</front>
</pmc>
</record>

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