Table 1

Number of sequences downloaded and utilized in this study for each of the influenza viral segments and their conserved regions, the longest conserved region of each segment and the conserved regions with highest conservation percentage are recorded

Segment

Number of sequences

Number of conserved regions

Longest conserved region in each segment

Conserved regions with highest conservation percentage

Conserved region

Percentage

1-PB2

3538

13

Region 12 (from nt 2165 to 2317)

PB2 - 12: Position 2165 to 2317

96.73%

2-PB1

3319

25

Region 2 (from nt 230 to 493)

PB1 - 22: Position 2012 to 2064

98.06%

3-PA

3720

18

Region 7 (from nt 690 to 677)

PA-6: Position 621 to 677

98.16%

5-NP

3776

14

Region 1 (from nt 62 to 161)

NP-13: Position 1447 to 1486

97.08%

7-M

3605

8

Region 8 (from nt 733 to 1000)

M-6: Position 599 to 663

97.22%

8-NS

4125

9

Region 6 (from nt 492 to 700)

NS-1: Position 59 to 137

98.96%

TOTAL

22083

87

ElHefnawi et al. Virology Journal 2011 8:44   doi:10.1186/1743-422X-8-44