[Prevalence and intensity of infection by soil-transmitted helminths and prevalence of malaria among schoolchildren in El Salvador].

Introduction: El Salvador does not have recent data on the prevalence of infection with soil-transmitted helminths among children aged under 15 years of age. As one of the countries in the Americas that reports few malaria cases, eradication of this disease from El Salvador is considered to be feasible.

Objective: To determine the prevalence and intensity of infection by soil-transmitted helminths, as well as the prevalence of Plasmodium spp.

Risk factors for Chagas disease among pregnant women in El Salvador.

Objectives: To determine the seroprevalence of Chagas disease among pregnant women and estimate the risk factors for Chagas disease during pregnancies.

Methods: Community-based serological tests on Trypanosoma cruzi and structured interviews on socio-demographic and socio-economic status were conducted with pregnant women registered at three health centres in Sonsonate province, El Salvador.

Results: Of 797 pregnant women participating in the study, 29 (3.