High Prevalence of Congenital <i>Trypanosoma cruzi</i> Infection and Family Clustering in Salta, Argentina

Abstract

Siblings of an infant infected with T cruzi are at high risk for infection themselves and, even in the absence of symptoms, should also be screened for infection. The findings of family clustering of infection and of second-generation congenital infection in vector-free areas suggest that new modalities of transmission, other than classic vector-borne spread, may occur both in endemic and in nonendemic areas.