An unidentified cluster of infection in the Peruvian Amazon region

  • Angela Cornejo Centro de Investigación de la Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
  • Claudia Gomes ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic – Universitat de Barcelona, Barcelona, Spain
  • Luis Suarez Centro de Investigación de la Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
  • Sandra Martinez-Puchol ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic – Universitat de Barcelona, Barcelona, Spain
  • Pershing Bustamante Dirección Regional de Salud de Amazonas, Chachapoyas, Peru
  • Maria J Pons Centro de Investigación de la Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
  • Joaquim Ruiz Centro de Investigación de la Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
  • Juana del Valle Mendoza Centro de Investigación de la Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
Keywords: Bartonella spp., Sphingomonas, diagnosis, outbreak, Peru

Abstract

Introduction: Bartonella bacilliformis is the etiological agent of Carrion’s disease, which is a neglected disease linked to people in low-socioeconomic populations in Andean valleys. An outbreak of B. bacilliformis was reported in a rural area of the Peruvian Amazon region. The aim of this study was to characterize this outbreak using molecular techniques.

Methodology: Fifty-three blood samples from patients diagnosed with Carrion’s disease were analyzed by molecular tools, using both a Bartonella-specific polymerase chain reaction (PCR) and an universal PCR, both based on 16S rRNA gene amplification. Additional water samples from the area were also analyzed.

Results: Unexpectedly, the samples were positive only when the universal PCR was used. Although environmental contamination cannot be ruled out, the results showed that Sphingomonas faeni was the possible causative agent of this outbreak, and that water was the most feasible infection source.

Conclusions: Diagnosis by clinical criteria or microscopy may lead to misdiagnosis. There is a need to include molecular tools in the routine diagnosis of febrile syndromes, including Carrion’s disease.

Published
2015-05-18
How to Cite
1.
Cornejo A, Gomes C, Suarez L, Martinez-Puchol S, Bustamante P, Pons M, Ruiz J, del Valle Mendoza J (2015) An unidentified cluster of infection in the Peruvian Amazon region. J Infect Dev Ctries 9:524-529. doi: https://doi.org/10.3855/jidc.6235
Section
Brief Original Articles