Volume 73, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


The frequency of and infection was analyzed in a rural community in the state of Morelos, Mexico, using polymerase chain reaction (PCR). Sociodemographic variables as risk factors for the infection were assessed. Results highlighted the number of individuals with intestinal parasites (43.1%) in the community, indicating extensive fecalism. A high frequency of asymptomatic infection, higher than infection (13.8% versus 9.6%), was detected by PCR. Anti-amebic antibody levels (IgG) in serum and saliva (IgA) samples were not associated with intestinal infection. These findings suggest a predominant distribution of strains of low invasive potential in this community.


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  • Received : 27 Jul 2004
  • Accepted : 15 Jan 2005

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