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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	2991	1.1
41	0	0	8	0	3	8	3066	0.62
42	0	2	9	0	8	8	3216	0.84
43	0	0	12	0	18	12	3459	1.21
44	0	1	16	0	11	9	3743	0.99
45	0	2	14	0	17	15	3938	1.22
46	0	1	14	0	17	14	4181	1.1
47	0	2	21	0	28	19	3707	1.89
48	0	0	33	0	22	17	4220	1.71
49	0	5	37	0	30	17	4445	2
50	0	3	77	0	29	18	4647	2.73
51	0	7	104	0	54	23	4639	4.05
52	0	4	102	0	45	16	4901	3.41
01	0	12	101	0	44	19	5133	3.43
02	0	29	136	0	45	16	5010	4.51
03	0	42	179	0	58	17	4867	6.08
04	0	68	224	0	109	25	5242	8.13
05	0	89	324	0	160	36	5086	11.97
06	0	105	340	0	205	40	5149	13.4
07	0	86	264	0	226	38	4269	14.38