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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	9	9	2789	1.18
41	0	0	5	0	5	8	2836	0.63
42	0	2	8	0	9	8	3013	0.9
43	0	0	10	0	19	12	3283	1.25
44	0	1	16	0	11	9	3504	1.06
45	0	2	11	0	18	15	3596	1.28
46	0	2	14	0	18	16	3789	1.32
47	0	3	19	0	30	20	3117	2.31
48	0	0	12	0	24	1	2233	1.66