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Trop Doct 2009;39:231-232
doi:10.1258/td.2009.090035
© 2009 Royal Society of Medicine Press

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Investigation of two outbreaks of suspected oral transmission of acute Chagas disease in the Amazon region, Pará State, Brazil, in 2007

Henrique de Barros Moreira Beltrão BSc MSc   *    Matheus de Paula Cerroni BSc   *   Daniel Roberto Coradi de Freitas BSc MSc   * {dagger}   Ana Yecê das Neves Pinto MD PhD   {ddagger}   Vera da Costa Valente BSc MSc   {ddagger}   Sebastião Aldo Valente BSc PhD   {ddagger}   Elenild de Góes Costa BSc MSc   §   Jeremy Sobel MD MPH   * **

* Field Epidemiology Training Program, Secretariat of Health Surveillance, Ministry of Health, Brasília, DF; {dagger} National Agency for Sanitary Surveillance, Ministry of Health, Brasília, DF; {ddagger} Evandro Chagas Institute, Secretariat of Health Surveillance, Ministry of Health, Belém, PA; § Secretariat of Public Health, Pará State, Belém, PA, Brazil; ** Centers for Disease Control and Prevention, Atlanta, GA, USA

Correspondence to: Henrique de Barros Moreira Beltrão, Field Epidemiology Training Program, Secretariat of Health Surveillance, Ministry of Health, Brasília, DF, Brazil Email: henrique.beltrao{at}saude.gov.br

Acute Chagas disease (ACD) is caused by Trypanosoma cruzi. ACD outbreaks due to probable oral transmission occur regularly in small family gatherings that are exposed to contaminated foods. We studied two cohorts of residents on islands in the Breves and Bagre municipalities, in July and August 2007, to identify risk factors of transmission and to recommend preventative measures. Of the 25 cases identified in both cohorts, 13 (52%) were men, and the most frequent symptoms were fever (96%),asthenia (80%), myalgia (76%), abdominal pain (64%), retro-orbital pain, headaches and asthma (52%). We recommend detailed investigation of future outbreaks and other studies to better understand and control oral transmission of T. cruzi.


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