INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2008 - 2009 Season
Week
A(H1)
A(H3)
A(Unk)
B
Total # Tested
% Positive
40
0
0
10
5
1951
0.77
41
0
4
6
4
1736
0.81
42
0
1
8
1
999
1
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