Leptospirosis seroprevalence and associated features in rice farmers of tropical region of Peru

Authors

  • Jorge O. Alarcón-Villaverde Sección Epidemiología, Instituto de Medicina Tropical “Daniel A. Carrión” de la Universidad Nacional Mayor de San Marcos. Lima, Perú. Médico cirujano. Doctor en Medicina.
  • Franco Romani-Romani Sección Epidemiología, Instituto de Medicina Tropical “Daniel A. Carrión” de la Universidad Nacional Mayor de San Marcos. Lima, Perú. Médico cirujano.
  • Romina A. Tejada Sección Epidemiología, Instituto de Medicina Tropical “Daniel A. Carrión” de la Universidad Nacional Mayor de San Marcos. Lima, Perú. Médico cirujano. Magíster en Epidemiología Clínica.
  • Paolo Wong-Chero Sección Epidemiología, Instituto de Medicina Tropical “Daniel A. Carrión” de la Universidad Nacional Mayor de San Marcos. Lima, Perú. Médico cirujano.
  • Manuel Céspedes-Zambrano Oficina General de Investigación y Transferencia Tecnológica, Instituto Nacional de Salud. Lima, Perú. Biólogo. Magíster en Salud Pública.

DOI:

https://doi.org/10.17843/rpmesp.2014.312.35

Keywords:

Leptospirosis, Prevalence, Agricultural workers’ diseases, Peru

Abstract

Objectives. To estimate the seroprevalence of leptospirosis in rice farmers of the Alto Mayo Valley in the Peruvian region of San Martín and to identify factors associated with infection. Materials and methods. A cross-sectional study was conducted between October and November of 2010 on a sample of 254 farmers from eleven irrigation committees in the Alto Mayo Valley. A blood sample was collected as well as sociodemographic, household and labor characteristics in the form of a questionnaire. The presence of antibodies against leptospira was determined using the microscopic agglutination test and the IgM ELISA. Results. The seroprevalence by agglutination was 64.6% (95% CI: 58.6-70.6). The IgM ELISA test was reactive in 15,0% (95% CI: 10.5-19.5). The most frequent serovar were Icterohaemorrhagiae, Autumnalis, Australis, Panama and Grippotyphosa. Independently associated factors were handling rodents (adjusted OR (aOR): 7.9; 95% CI: 1.6-37.9), working barefoot (aOR: 2.9; 95% CI: 1.2-6.8) and male sex (aOR: 4.5; 95% CI: 1.3-15.3). Conclusions. The Alto Mayo Valley is a hyperendemic for leptospirosis. The most important factors were associated with working barefoot and handling rodents in crop fields. Consequently, it is recommended to implement interventions that affect these two factors in order to reduce the risk of infection in rice farmers.

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Published

2014-07-02

Issue

Section

Research Articles

How to Cite

1.
Alarcón-Villaverde JO, Romani-Romani F, Tejada RA, Wong-Chero P, Céspedes-Zambrano M. Leptospirosis seroprevalence and associated features in rice farmers of tropical region of Peru. Rev Peru Med Exp Salud Publica [Internet]. 2014 Jul. 2 [cited 2024 May 29];31(2). Available from: https://rpmesp.ins.gob.pe/index.php/rpmesp/article/view/35

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