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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	2988	1.1
41	0	0	8	0	3	8	3064	0.62
42	0	2	9	0	8	8	3217	0.84
43	0	0	12	0	18	12	3460	1.21
44	0	1	16	0	11	9	3746	0.99
45	0	2	14	0	17	15	3939	1.22
46	0	1	14	0	17	14	4180	1.1
47	0	2	21	0	28	19	3709	1.89
48	0	0	33	0	22	17	4220	1.71
49	0	5	37	0	30	17	4446	2
50	0	3	77	0	29	18	4647	2.73
51	0	7	104	0	54	23	4636	4.06
52	0	4	102	0	45	16	4899	3.41
01	0	12	100	0	44	19	5130	3.41
02	0	29	132	0	45	16	4998	4.44
03	0	42	177	0	57	17	4775	6.14
04	0	58	216	0	106	22	5016	8.01
05	0	77	303	0	154	29	4483	12.56
06	0	62	237	0	176	25	3230	15.48