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INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2011 - 2012 Season

Week	A(H1)	A(2009 H1N1)	A(H3)	A(unable to sub-type)	A(Subtyping not performed)	B	Total # Tested	% Positive
40	0	3	12	0	10	9	2784	1.22
41	0	0	5	0	3	8	2814	0.57
42	0	2	8	0	9	8	2992	0.9
43	0	0	10	0	17	11	3179	1.2
44	0	0	11	0	8	11	3241	0.93
45	0	1	10	0	15	13	3147	1.24
46	0	0	5	0	13	4	2276	0.97