Table 2.

Maternal Trypanosoma cruzi serology at delivery and polymerase chain reaction (PCR) and genotyping in maternal blood from seropositive mothers (with at least one positive antibody rapid test in cord blood and a positive enzyme-linked immunosorbent assay [ELISA] Wiener in maternal blood) by country

	Argentina (N = 9,390)		Honduras (N = 6,595)		Mexico (N = 12,160)
	n/N	%	n/N	%	n/N	%
Rapid tests in cord blood
Both rapid tests positive	129/9,339	1.4	183/6,583	2.8	38/12,067	0.3
Only Stat-Pak positive	22/9,339	0.2	39/6,583	0.6	36/12,067	0.3
Only T-Detect positive	4/9,339	0.1	9/6,583	0.1	35/12,067	0.3
ELISA Wiener in maternal blood* †
Positive	134/154	87.0	181/230	78.7	32/109	29.4
Negative	20/154	13.0	49/230	21.3	75/109	68.8
Inconclusive	0/154	0.0	0/230	0.0	2/109	1.8
PCR in maternal blood‡ §
Positive	105/134	78.4	132/181	72.9	17/32	53.1
Negative	29/134	21.6	49/181	27.1	15/32	46.9
Genotyping in maternal blood‡ ‖
Only non-TcI	23/105	21.9	54/132	40.9	6/17	35.3
Only TcI	6/105	5.7	1/132	0.8	1/17	5.9
Both TcI and non-TcI	6/105	5.7	10/132	7.6	0/17	0.0
Undetermined	70/105	66.7	67/132	50.8	10/17	58.8

^*Among women with at least one positive rapid test in cord blood.

^†P < 0.01.

^‡Among women with at least one positive rapid test in cord blood and a positive ELISA Wiener in maternal blood.

^§P = 0.015.

^‖P = 0.009.