Table 1.
Characteristics of Infants With Prolonged RSV Infection Compared With Other RSV Infection and the Entire Cohort
| Characteristic | Prolonged RSV Infection (n = 19) |
RSV Infection (n = 342) |
Total (n = 1949) |
|---|---|---|---|
| Age at first RSV illness, mo, median (IQR) | 6 (4–6) | 4 (2–5) | NA |
| Illness respiratory severity score, median (IQR) | 2.0 (1.2–3.0) | 3.0 (2.0–4.0) | NA |
| RSV season | |||
| ȃ2012–2013 | 68 | 54 | 44 |
| ȃ2013–2014 | 32 | 46 | 56 |
| Self-reported race | |||
| ȃNon-Hispanic black | 37 | 13 | 18 |
| ȃNon-Hispanic white | 63 | 69 | 65 |
| ȃHispanic | 0 | 10 | 9 |
| ȃMultirace/ethnicity/other | 0 | 8 | 8 |
| Female sex | 53 | 44 | 48 |
| Second-hand smoke exposure | 21 | 23 | 47 |
| Health insurance | |||
| ȃMedicaid | 68 | 48 | 54 |
| ȃPrivate | 32 | 51 | 45 |
| ȃNone/unknown | 0 | 1 | 1 |
| Daycare and/or siblingsa | 84 | 78 | 66 |
Data are percentage except where indicated. Prolonged infection is defined as RSV PCR-positive samples with ≥15 days between testing and meeting criteria for acute respiratory infection.
Abbreviations: IQR, interquartile range; NA, not applicable; PCR, polymerase chain reaction; RSV, respiratory syncytial virus.
Presence of sibling or another child ≤ 6 years of age at home.