INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2007 - 2008 Season
Week
A(H1)
A(H3)
A(Unk)
B
Total # Tested
% Positive
40
0
0
10
5
2187
0.69
41
0
4
7
4
2068
0.73
42
1
2
15
3
1905
1.1
43
0
0
3
2
1251
0.4
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