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    <name type="personnal">
      <namePart type="family">Rebbetts</namePart>
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      <namePart type="family">Watkins</namePart>
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    <abstract>Background. Study of meningococcal carriage is essential to understanding the epidemiology of Neisseria meningitidis infection. Methods. Twenty cross-sectional carriage surveys were conducted in 7 countries in the African meningitis belt; 5 surveys were conducted after introduction of a new serogroup A meningococcal conjugate vaccine (MenAfriVac). Pharyngeal swab specimens were collected, and Neisseria species were identified by microbiological and molecular techniques. Results. A total of 1687 of 48 490 participants (3.4%; 95% confidence interval [CI], 3.2%-3.6%) carried meningococci. Carriage was more frequent in individuals aged 5-14 years, relative to those aged 15-29 years (adjusted odds ratio [OR], 1.41; 95% CI, 1.25-1.60); in males, relative to females (adjusted OR, 1.17; 95% CI, 1.10-1.24); in individuals in rural areas, relative to those in urban areas (adjusted OR, 1.44; 95% CI, 1.28-1.63); and in the dry season, relative to the rainy season (adjusted OR, 1.54; 95% CI, 1.37-1.75). Forty-eight percent of isolates had genes encoding disease-associated polysaccharide capsules; genogroup W predominated, and genogroup A was rare. Strain diversity was lower in countries in the center of the meningitis belt than in Senegal or Ethiopia. The prevalence of genogroup A fell from 0.7% to 0.02% in Chad following mass vaccination with MenAfriVac. Conclusions. The prevalence of meningococcal carriage in the African meningitis belt is lower than in industrialized countries and is very diverse and dynamic, even in the absence of vaccination.</abstract>
    <targetAudience authority="marctarget">specialized</targetAudience>
    <subject>
      <topic>Africa</topic>
      <topic>meningitis</topic>
      <topic>meningococcus</topic>
      <topic>Neisseria meningitidis</topic>
      <topic>carriage</topic>
    </subject>
    <subject authority="local">
      <geographic>NIGERIA</geographic>
      <geographic>MALI</geographic>
      <geographic>NIGER</geographic>
      <geographic>TCHAD</geographic>
      <geographic>ETHIOPIE</geographic>
      <geographic>GHANA</geographic>
      <geographic>SENEGAL</geographic>
    </subject>
    <classification authority="local">050</classification>
    <classification authority="local">052</classification>
    <relatedItem type="host">
      <titleInfo>
        <title>Journal of Infectious Diseases</title>
      </titleInfo>
      <part>
        <detail type="volume">
          <number>212</number>
        </detail>
        <detail type="volume">
          <number>8</number>
        </detail>
        <extent unit="pages">
          <list>1298-1307</list>
        </extent>
      </part>
      <originInfo>
        <dateIssued>2015</dateIssued>
      </originInfo>
      <identifier type="issn">0022-1899</identifier>
    </relatedItem>
    <identifier type="uri">https://www.documentation.ird.fr/hor/PAR00013924</identifier>
    <identifier type="doi">10.1093/infdis/jiv211</identifier>
    <identifier type="issn">0022-1899</identifier>
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      <recordCreationDate encoding="w3cdtf">2015-12-04</recordCreationDate>
      <recordChangeDate encoding="w3cdtf">2025-05-22</recordChangeDate>
      <recordIdentifier>PAR00013924</recordIdentifier>
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        <languageTerm authority="iso639-2b">fre</languageTerm>
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