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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	10	1	20	4	2255	1.55
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	3407	2.08
45	13	9	47	10	3661	2.16
46	22	4	55	0	3947	2.05
47	32	2	90	12	3942	3.45
48	41	11	50	12	4531	2.52
49	29	10	112	22	4646	3.72
50	49	17	114	27	4884	4.24
51	56	25	160	46	5479	5.24
52	50	17	259	75	6933	5.78
01	60	44	295	87	6109	7.96
02	123	100	490	130	6392	13.19
03	147	132	587	166	6230	16.57
04	142	228	997	258	7340	22.14
05	152	338	1828	435	9979	27.59
06	70	322	1356	378	6382	33.31