Maternal factors associated with congenital <i>Trypanosoma cruzi</i> transmission risk.

The limit of detection for the quantitative PCR assay was 1 parasite/mL. Parasite load values below this cutoff were assumed to be 0 for the purpose of analysis. aqPCR data were missing for 2 women who transmitted and 6 women who did not transmit to their infants. Four mother-infant pairs with ambiguous transmission status are excluded (see text). Maternal factors associated with congenital Trypanosoma cruzi transmission risk.