[Native and non-native antigen to determine the seroprevalence of Trypanosoma cruzi in pregnant women from the state of Morelos, Mexico].

Background: Chagas disease is a globally important chronic systemic parasitic infection caused by Trypanosoma cruzi.

Aim: To determine the prevalence of antibodies against T cruzi in pregnant women from the state of Morelos, México.

Methods: 1,620 sera from pregnant women were analyzed using two serological tests: ELISAc (native crude antigen) and ELISAr (recombinant, non-native antigen).