TABLE 1

Comparison of Subjects with FLU and Non-FLU Infection

Overall, n (%), n = 241FLU, n (%), n = 60Non-FLU, n (%), n = 181P Value
Age, mo, median27.445.027.1.06
Gender, % boys143 (59.3)35 (58.3)108 (59.7).86
Race
 White105 (43.5)22 (36.7)83 (46.1).21
 Black117 (48.5)35 (58.3)82 (45.6)
 Other19 (7.9)3 (5.0)16 (8.3)
No. in household, mean ± SD4.51 ± 1.574.50 ± 1.494.51 ± 1.60.95
Day care/school attendance120 (49.8)30 (50.0)90 (51.2).80
Any high-risk conditiona129 (53.5)39 (65.0)90 (51.2).05
 Asthma58 (24.0)16 (26.7)42 (23.2).59
 Neurologic condition38 (15.7)9 (15.0)29 (16.0).85
 Chronic respiratory disease13 (5.4)1 (1.7)12 (6.6).14
 Heart disease21 (8.7)5 (8.3)16 (8.8).90
 Sickle cell/asplenia22 (9.1)9 (15.0)13 (7.2).07
Sick contacts96 (39.8)33 (55.0)63 (34.8)<.01*
Smokers in household62 (25.7)17 (28.8)45 (26.2).69
FLU vaccine115 (47.7)31 (57.4)84 (54.9).75
Any severe complicationb85 (35.3)20 (33.3)65 (35.9).72
 Pneumonia63 (26.1)13 (21.7)50 (27.6).36
 Respiratory failure17 (7.1)2 (3.3)15 (8.3).19
 Seizure14 (5.8)3 (5.0)11 (6.1).76
 Bacteremia5 (2.1)1 (1.7)4 (2.2).80
 Encephalopathy3 (1.2)2 (3.4)1 (0.6).09
 Bacterial tracheitis2 (0.8)1 (1.7)1 (0.6).41
 Death1 (0.4)0 (0.0)1 (0.6).56
  • *, statistically significant.

  • a Subjects may have had >1 high-risk condition.

  • b Subjects may have developed >1 severe complication.