title: High prevalence rate of Entamoeba histolytica asymptomatic infection in a rural Mexican community.
abstract: The frequency of Entamoeba histolytica and Entamoeba dispar 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 E. histolytica asymptomatic infection, higher than E. dispar 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 E. histolytica intestinal infection. These findings suggest a predominant distribution of E. histolytica strains of low invasive potential in this community.
authors: Department of Experimental Medicine, School of Medicine, National Autonomous University of Mexico, Mexico Distrito Federal, Mexico.
authors: Fernando
authors: F
authors: Ramos
authors: Patricia
authors: P
authors: Morán
authors: Enrique
authors: E
authors: González
authors: Gabriela
authors: G
authors: García
authors: Manuel
authors: M
authors: Ramiro
authors: Alejandro
authors: A
authors: Gómez
authors: María Del Carmen García
authors: Mdel C
authors: DE León
authors: Emma I
authors: EI
authors: Melendro
authors: Alicia
authors: A
authors: Valadez
authors: Cecilia
authors: C
authors: Ximénez
mesh_terms: D000818:Animals; D000913:Antibodies, Protozoan / Q000097:blood; D001483:Base Sequence; D017931:DNA Primers; D004404:Dysentery, Amebic / Q000453:epidemiology*; D004748:Entamoeba histolytica / Q000235:genetics / Q000302:isolation & purification; D005190:Family; D005243:Feces / Q000469:parasitology; D006801:Humans; D008101:Liver Abscess, Amebic / Q000453:epidemiology*; D008800:Mexico / Q000453:epidemiology; D016133:Polymerase Chain Reaction; D012307:Risk Factors; D012424:Rural Population; D014881:Water Supply
chemical_list: D000913:Antibodies, Protozoan; D017931:DNA Primers