Prevalence of the paa gene (porcine attaching and effacing associated) in porcine enteropathogenic Escherichia coli (PEPEC) associated with postweaning diarrhea in south Brazil

Braz J Microbiol. 2013 Oct 30;44(2):515-7. doi: 10.1590/S1517-83822013000200030. eCollection 2013.


Paa (porcine attaching and effacing associated) may be an important virulence factor E. coli of piglets with diarrhea. This study showed for the first time in Brazil the prevalence of the paa gene (22%) in E. coli strains isolated from piglets and these isolates also harboured genes for other adhesins and toxins LT II, STa and STb.

Keywords: Escherichia coli; PEPEC; paa gene; pig; postweaning diarrhea.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Brazil
  • Diarrhea / microbiology
  • Diarrhea / veterinary*
  • Enteropathogenic Escherichia coli / genetics
  • Enteropathogenic Escherichia coli / isolation & purification*
  • Escherichia coli Infections / microbiology
  • Escherichia coli Infections / veterinary*
  • Escherichia coli Proteins / genetics*
  • Prevalence
  • Swine
  • Swine Diseases / microbiology*
  • Virulence Factors / genetics*


  • Escherichia coli Proteins
  • Paa protein, E coli
  • Virulence Factors