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INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2004 - 2005 Season

Week	A(H1N1) & A(H1N2)	A(H3N2)	A(Unk)	B	Total # Tested	% Positive
40	0	5	3	4	1736	0.7
41	0	10	3	1	2035	0.7
42	0	15	11	10	2368	1.5
43	0	13	12	7	2588	1.2
44	0	16	10	16	2753	1.5
45	0	27	10	24	3050	2.0
46	0	41	29	20	3140	2.9
47	0	16	22	21	3107	1.9
48	0	61	39	32	3773	3.5
49	0	84	64	30	3506	5.1
50	1	101	105	45	4130	6.1
51	1	167	242	53	4048	11.4
52	0	312	430	116	5328	16.1
01	2	350	644	146	6006	19.0
02	2	257	560	140	5493	17.5
03	1	289	796	169	5769	21.8
04	1	355	983	231	6792	23.1
05	0	457	1078	283	6798	26.7
06	2	286	1137	239	6881	24.2
07	1	128	594	187	4452	20.4