Table 1.
Characteristics of infants with DENV infections (January 2007 to May 2009)
| Study subject characteristics | Symptomatic DENV infection* (N = 42) | Inapparent DENV infection (N = 20) | |||
|---|---|---|---|---|---|
| Hospitalized (N = 23) | Outpatient (N = 19) | ||||
| DHFb (N = 9) | DFb (N = 14) | ||||
| DENV serotypes | DENV3: N = 9 | DENV3: N = 14 | DENV1: N = 1 | DENV2: N = 5 | |
| DENV2: N = 4 | DENV3: N = 15 | ||||
| DENV3: N = 14 | |||||
| 1° or 2° DENV infection | 1°: N = 9 | 1°: N = 13 | 1°: N = 19 | 1°: N = 20 | |
| 2°: N = 1 | |||||
| Gender ratio (male/female) | 6/3 | 8/6 | 11/8 | 10/10 | P = 0.9 |
| Initial clinical diagnoses | Respiratory illness: N = 9 | Respiratory illness: N = 13 | |||
| Dengue: N = 8 | Fever, unknown etiology: N = 2 | ||||
| Febrile seizure: N = 3 | Dengue: N = 1 | ||||
| Viral infection: N = 2 | Viral exanthem: N = 1 | ||||
| Acute gastroenteritis: N = 1 | Herpangina: N = 1 | ||||
| Impetigo: N = 1 | |||||
*
Infants with symptomatic and inapparent DENV infections were identified as described in Materials and Methods.