High prevalence rate of Entamoeba histolytica asymptomatic infection in a rural Mexican community.
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.
Ramos
Fernando
F
Department of Experimental Medicine, School of Medicine, National Autonomous University of Mexico, Mexico Distrito Federal, Mexico.
Morán
Patricia
P
González
Enrique
E
García
Gabriela
G
Ramiro
Manuel
M
Gómez
Alejandro
A
DE León
María Del Carmen García
Mdel C
Melendro
Emma I
EI
Valadez
Alicia
A
Ximénez
Cecilia
C
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
D000913:Antibodies, Protozoan; D017931:DNA Primers