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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	14	0	7	9	2992	1.1
41	0	0	9	0	2	8	3066	0.62
42	0	2	9	0	8	8	3211	0.84
43	0	0	12	0	19	12	3458	1.24
44	0	1	17	0	11	9	3744	1.01
45	0	2	14	0	17	15	3935	1.22
46	0	1	14	0	16	14	4175	1.08
47	0	2	21	0	28	19	3707	1.89
48	0	0	33	0	22	17	4219	1.71
49	0	5	38	0	29	17	4447	2
50	0	3	77	0	29	18	4647	2.73
51	0	7	104	0	54	23	4640	4.05
52	0	4	104	0	43	16	4951	3.37
01	0	12	105	0	41	19	5191	3.41
02	0	29	139	0	44	17	5067	4.52
03	0	42	189	0	53	17	4978	6.05
04	0	69	253	0	103	28	5499	8.24
05	0	95	363	0	149	38	5479	11.77
06	0	123	414	0	186	53	5654	13.72
07	0	164	481	0	276	60	6251	15.69
08	0	245	663	0	349	69	6567	20.19
09	0	333	889	0	447	97	7199	24.53
10	0	290	986	0	482	81	6471	28.42
11	0	211	559	0	492	91	5088	26.59