Seroepidemiology of Entamoeba histolytica Infection in General Population in Rural Durango, Mexico

Cosme Alvarado-Esquivel, Jesus Hernandez-Tinoco, Luis Francisco Sanchez-Anguiano


Background: The seroepidemiology of Entamoeba histolytica in Mexico has been scantily studied. The aim of the study was to determine the seroprevalence and correlates of E. histolytica antibodies in adults in rural areas in Durango, Mexico.

Methods: Through a cross-sectional study, E. histolytica IgG antibodies were determined in 282 adults living in rural Durango, Mexico using an enzyme-linked immunoassay. In addition, seroprevalence association with the socio-demographic, housing conditions, and behavioral characteristics of the subjects studied was investigated.

Results: One hundred and eighteen (41.8%) of the 282 rural subjects had anti-E. histolytica IgG antibodies. Multivariate analysis showed that E. histolytica exposure was positively associated with source of drinking water (OR = 2.73; 95% CI: 1.33 - 5.58; P = 0.005), and poor education of the head of the family (OR = 1.53; 95% CI: 1.03 - 2.27; P = 0.03). In contrast, E. histolytica exposure was negatively associated with consumption of unpasteurized cow milk (OR = 0.55; 95% CI: 0.31 - 0.96; P = 0.03), and crowding at home (OR = 0.33; 95% CI: 0.17 - 0.64; P = 0.0009).

Conclusions: The seroprevalence of E. histolytica infection found in adults in rural Durango is high compared with those reported in other Mexican populations. The correlates of E. histolytica seropositivity found in the present study may be useful for the planning of optimal preventive measures against E. histolytica infection.

J Clin Med Res. 2015;7(6):435-439


Entamoeba histolytica; Seroepidemiologic studies; Rural population; Risk factors; Mexico

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