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Chlamydia trachomatis serotype A infections in the Amazon region of Brazil: prevalence, entry and dissemination

Overview of attention for article published in Revista da Sociedade Brasileira de Medicina Tropical, April 2015
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Title
Chlamydia trachomatis serotype A infections in the Amazon region of Brazil: prevalence, entry and dissemination
Published in
Revista da Sociedade Brasileira de Medicina Tropical, April 2015
DOI 10.1590/0037-8682-0038-2015
Pubmed ID
Authors

Marluísa de Oliveira Guimarães Ishak, Maurimélia Mesquita Costa, Núbia Caroline Costa de Almeida, Angélica Menezes Santiago, William Botelho de Brito, Antonio Carlos Rosário Vallinoto, Vânia Nakauth Azevedo, Ricardo Ishak

Abstract

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. 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. 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. 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.

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Mendeley readers

The data shown below were compiled from readership statistics for 39 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 39 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 10 26%
Student > Bachelor 7 18%
Student > Master 3 8%
Librarian 2 5%
Student > Postgraduate 2 5%
Other 6 15%
Unknown 9 23%
Readers by discipline Count As %
Medicine and Dentistry 9 23%
Agricultural and Biological Sciences 7 18%
Pharmacology, Toxicology and Pharmaceutical Science 3 8%
Nursing and Health Professions 3 8%
Social Sciences 2 5%
Other 3 8%
Unknown 12 31%