Table 1.
Clinical and sociodemographic data of cohorts studied.
| Mother’s Characteristics | No. of Subjects (%) a | |
|---|---|---|
| Cohort 1 n = 102 |
Cohort 2 n = 134 |
|
| Delivery dates (range) | 5 February 2017 to 9 October 2017 | 15 November 2017 to 4 July 2018 |
| Mean mother’s age at delivery (year) (±SD) | 23.8 (±7.1) | 24.1 (±5.5) |
| Mean gestational week at birth (week) (±SD) | 38.4 (±1.9) | 38.6 (±1.4) |
| <37 weeks | 10 (10%) | 12 (9%) |
| Cesarean delivery | 47 (46%) | 56 (42%) |
| Previous diagnosis of chikungunya | 39 (38%) | 54 (40%) |
| Previous diagnosis of dengue | 7 (7%) | 12 (9%) |
| Previous diagnosis of Zika | 3 (3%) | 1 (1%) |
| Children’s characteristics at birth | ||
| Gender b | ||
| Female | 49 (47%) | 78 (58%) |
| Male | 55 (53%) | 57 (42%) |
| Mean head circumference (cm) ±SD | 33.9 ± 1.5 | 33.9 ± 1.6 |
| Mean child length (cm) ±SD | 49.8 ± 3.2 | 50.1 ± 2.6 |
| Mean birth weight (g) ±SD | 3087 ± 464.8 | 3102 ± 488.8 |
| Birth defects c | 2 (2%) | 2 (1%) |
| Microcephaly | 1 (1%) | --- |
| Household characteristics | ||
| Brick wall | 79 (78%) | 114 (85%) |
| Municipal piped water supply | 76 (75%) | 114 (85%) |
| Indoor toilet | 62 (61%) | 88 (66%) |
| Cement or ceramic floor | 62 (61%) | 82 (61%) |
| Electricity | 97 (95%) | 133 (99%) |
a Data represent no. (%) of study subjects, unless otherwise specified.
b Includes 2 sets of twins in Cohort 1 and 1 set of twins in Cohort 2; then total children in Cohort 1 = 104, and Cohort 2 = 135.
c Includes microcephaly, agenesis of corpus callosum, spina bifida, and anencephaly.