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Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, 1300 S. Second St., Suite 300, Minneapolis, MN 55454, USA


Institute of Animal Pathology, Austral University of Chile, Valdivia, Chile


Author to whom correspondence should be addressed.

Abstract Leptospirosis is a zoonosis of global distribution that affects tropical and temperate areas. Under suitable conditions, Leptospira can survive in water and soil and contribute to human and animal infections. The objective of this study was to describe the presence of pathogenic Leptospira in peri-domestic water samples from rural households in southern Chile. Water samples, including puddles, containers, animal troughs, rivers, canals, and drinking water were collected from 236 households and tested for Leptospira using a PCR assay targeting the lipL32 gene. Evidence of Leptospira presence was detected in all sample types; overall, 13.5% 77-570 samples tested positive. A total of 10-22 45.5% open containers, 12-83 14.5% animal drinking sources, 9-47 19.1% human drinking sources, and 36-306 19.3% puddles tested positive. Lower income OR = 4.35, p = 0.003, increased temperature OR = 1.23, p < 0.001, and presence of dogs OR = 15.9, p = 0.022 were positively associated with positive puddles. Increased number of rodent signs was associated with positive puddles in the household OR = 3.22; however, only in the lower income households. There was no association between PCR positive rodents and puddles at the household level. Results revealed the ubiquity of Leptospira in the household environment and highlight the need to develop formal approaches for systematic monitoring. View Full-Text

Keywords: Leptospira; water; environment; PCR; rural Leptospira; water; environment; PCR; rural

Autor: Claudia Muñoz-Zanzi 1,2,* , Meghan R. Mason 1, Carolina Encina 2, Angel Astroza 2 and Alex Romero 2

Fuente: http://mdpi.com/


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