Wild capybaras as reservoir of shiga toxin-producing Escherichia coli in urban Amazonian Region

Lett Appl Microbiol. 2022 Jul;75(1):10-16. doi: 10.1111/lam.13694. Epub 2022 Mar 21.

Abstract

Capybaras are rodent widely distributed in South America, which inhabit lakeside areas including ecological parks and urban sites. Due to anthropological interaction, monitoring zoonotic pathogens in wildlife is essential for One Health. We investigated faecal samples from capybaras living in an urban area in Rio Branco (Acre, Brazil) for the presence diarrhoeagenic E. coli. Virulence factors from shiga toxin-producing E. coli (STEC), enterohaemorrhagic E. coli (EHEC), and enteropathogenic E. coli (EPEC) were screened by PCR. We detected at least one virulence factor in 81% of the animals, being classified as STEC and EHEC pathotypes. The presence of zoonotic E. coli in capybaras is a warning due to the highly frequent anthropological interactions with wild animals in this area. Our findings highlight the importance of investigating wild animals as carriers of zoonotic E. coli, requiring further investigations into wildlife surveillance and epidemiological monitoring.

Keywords: EHEC; EPEC; STEC; shiga toxin; wildlife; zoonotic diseases.

MeSH terms

  • Animals
  • Animals, Wild
  • Enteropathogenic Escherichia coli*
  • Escherichia coli Infections* / epidemiology
  • Escherichia coli Infections* / veterinary
  • Escherichia coli Proteins*
  • Rodentia
  • Shiga Toxin / genetics
  • Shiga-Toxigenic Escherichia coli* / genetics
  • Virulence Factors / genetics

Substances

  • Escherichia coli Proteins
  • Virulence Factors
  • Shiga Toxin