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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	2989	1.1
41	0	0	8	0	3	8	3064	0.62
42	0	2	9	0	8	8	3218	0.84
43	0	0	12	0	18	12	3460	1.21
44	0	1	16	0	10	9	3746	0.96
45	0	2	14	0	17	15	3934	1.22
46	0	1	14	0	17	14	4180	1.1
47	0	2	21	0	28	19	3705	1.89
48	0	0	33	0	22	17	4218	1.71
49	0	5	37	0	30	17	4443	2
50	0	3	77	0	29	18	4647	2.73
51	0	7	104	0	54	23	4640	4.05
52	0	4	102	0	45	16	4950	3.37
01	0	12	101	0	44	19	5190	3.39
02	0	29	137	0	46	17	5059	4.53
03	0	42	181	0	60	17	4928	6.09
04	0	69	234	0	113	27	5430	8.16
05	0	92	336	0	164	38	5321	11.84
06	0	117	361	0	205	46	5381	13.55
07	0	129	358	0	284	51	5630	14.6
08	0	71	306	0	319	30	3947	18.39