Pneumonia (n = 41)

Bronchiolitis (n = 36)

Bronchitis (n = 23)

Total

Consolidation, non-interstitial infiltrates

28 (68%)

3 (8.5%)

0 (0%)

31

Increased interstitial markings

8 (19.5%)

18 (50%)

2 (8.5%)

28

Lung hyper-expansion

0 (0%)

7 (19.5%)

2 (8.5%)

9

Pleural effusion

2 (5%)

0 (0%)

0 (0%)

2

Negative chest radiography

3 (7.5%)

8 (22%)

19 (82.5%)

30