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dc.creatorISHAK, Marluísa de Oliveira Guimarães-
dc.creatorCOSTA, Maurimélia Mesquita da-
dc.creatorALMEIDA, Núbia Caroline Costa de-
dc.creatorSANTIAGO, Angélica Menezes-
dc.creatorBRITO, William Botelho de-
dc.creatorVALLINOTO, Antonio Carlos Rosário-
dc.creatorAZEVEDO, Vânia Nakauth-
dc.creatorISHAK, Ricardo-
dc.identifier.citationISHAK, Marluísa de Oliveira Guimarães et al. Chlamydia trachomatis serotype A infections in the Amazon region of Brazil: prevalence, entry and dissemination. Revista da Sociedade Brasileira de Medicina Tropical, Uberaba, v. 48, n. 2, p. 170-174, abr. 2015. Disponível em: <>. Acesso em: 15 fev. 2017. <>.pt_BR
dc.description.abstractINTRODUCTION: Chlamydia infection is associated with debilitating human diseases including trachoma, pneumonia, coronary heart disease and urogenital diseases. Serotypes of C. trachomatis show a fair correlation with the group of diseases they cause, and their distribution follows a well-described geographic pattern. Serotype A, a trachoma-associated strain, is known for its limited dissemination in the Middle East and Northern Africa. However, knowledge on the spread of bacteria from the genus Chlamydia as well as the distribution of serotypes in Brazil is quite limited. METHODS: Blood samples of 1,710 individuals from ten human population groups in the Amazon region of Brazil were examined for antibodies to Chlamydia using indirect immunofluorescence and microimmunofluorescence assays. RESULTS: The prevalence of antibodies to Chlamydia ranged from 23.9% (Wayana-Apalai) to 90.7% (Awa-Guaja) with a mean prevalence of 50.2%. Seroreactivity was detected to C. pneumoniae and to all serotypes of C. trachomatis tested; furthermore, we report clear evidence of the as-yet-undescribed occurrence of serotype A of C. trachomatis. CONCLUSIONS: Specific seroreactivity not only accounts for the large extent of dissemination of C. trachomatis in the Amazon region of Brazil but also shows an expanded area of occurrence of serotype A outside the epidemiological settings previously described. Furthermore, these data suggest possible routes of Chlamydia introduction into the Amazon region from the massive human migration that occurred during the 1,700s.pt_BR
dc.publisherUniversidade Federal do Parápt_BR
dc.relation.ispartofRevista da Sociedade Brasileira de Medicina Tropicalpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectInfecções por Chlamydiapt_BR
dc.subjectSorotipo Apt_BR
dc.subjectAmazônia brasileirapt_BR
dc.titleChlamydia trachomatis serotype A infections in the Amazon region of Brazil: prevalence, entry and disseminationpt_BR
dc.typeArtigo de Periódicopt_BR
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