Parameter Influenza (No. of patients) Influenza (No. of patients) Influenza (No. of patients) Influenza (No. of patients)
H1N1-A
(n=25)
H1N1-B
(n=10)
A-H3N2
(n=4)
P-value
Normal
5 0 0
.228
Patchy infiltration 8 2 4 .012*
Interstitial infiltration 5 5 0 .069
Pleural effusion 1 0 0 .767
Pleural effusion with infiltration 3 0 0 .432
Unilateral involvement
2
3
1
.186
Bilateral involvement
10
4
3
.353
Upper lobe involvement
0
1
0
.204
Middle lobe involvement
1
2
2
.021*
Lower lobe involvement
6
4
0
.262