Table 1. Characteristics of the cohort (n = 40).
| Infected (n = 16) | Vaccinated (n = 14) | Control (n = 10) | p value | |
| Maternal Age (years), mean±SD | 26.1±3.7 | 27.4±5.6 | 25.6±4.6 | 0.62 |
| Race/Ethnicity, n (%) | ||||
| Hispanic | 3 (18.7) | 5 (35.7) | 4 (40.0) | 0.17 |
| White | 9 (56.3) | 9 (64.3) | 3 (30.0) | |
| Other/mixed | 4 (25) | 0 (0.0) | 3 (30.0) | |
| BMI, mean±SD | 26.0±4.6 | 24.9±5.6 | 31.9±10.1 | 0.04 |
| Gestational age at delivery (wks), mean±SD | 39.1±2.1 | 39.4±1.0 | 39.8±1.4 | 0.57 |
| Gestational age at H1N1 infection or vaccination (wks), mean±SD | 21.7±10.5 | 17.7±13.1 | n/a | 0.37 |