Table 1. Maternal characteristics of Nicaraguan cohort in León.

Characteristic	Women with delivery information (N = 194)
Maternal Age at enrollment, median years (IQR)	22.5 (18.8, 28.2)
Married, n (%)	45 (23.2)
Gestational age at 1st ANC*, median weeks (IQR)	26 (13, 34)
Pregnancy history, n (%)
No prior pregnancies	95 (49.0)
1	53 (27.3)
2 or more	46 (23.7)
Prior Preterm birth, n (%)	15 (7.7)
Prior Cesarean delivery, n (%)	35 (18.0)
Pregnancy-associated Hypertension, n (%)	10 (5.2)
Diabetes in pregnancy, n (%)	3 (1.5)
Physician diagnosis of Zika in pregnancy, n (%)	9 (4.6)
History of fever, rash, or conjunctivitis in pregnancy, n (%)	74 (38.1)
Zika in relation to pregnancy (N = 187 tested), n (%)
Naive	77 (41.2)
Pre-Immune	41 (21.9)
Unknown	29 (15.5)
Incident	40 (21.4)

*ANC, antenatal care