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INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2007 - 2008 Season

Week	A(H1)	A(H3)	A(Unk)	B	Total # Tested	% Positive
40	9	1	20	4	2254	1.51
41	11	3	22	1	2486	1.49
42	10	2	28	1	2870	1.43
43	8	1	27	5	3029	1.35
44	8	0	53	10	3401	2.09
45	13	9	47	10	3658	2.16
46	22	4	55	0	3944	2.05
47	32	2	90	12	3941	3.45
48	40	11	51	12	4467	2.55
49	29	10	112	22	4539	3.81
50	49	15	114	27	4743	4.32
51	55	23	157	45	5237	5.35
52	49	15	239	71	6585	5.68
01	57	38	263	79	5564	7.85
02	91	69	435	112	5858	12.07
03	107	75	535	123	5277	15.92
04	64	69	452	92	4034	16.78