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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	1705	0.7
41	0	9	2	2	2009	0.6
42	0	14	11	9	2331	1.5
43	0	13	12	7	2484	1.3
44	0	15	8	16	2520	1.5
45	0	9	10	23	2728	1.5
46	0	27	26	18	2838	2.5
47	0	8	23	17	2809	1.7
48	0	40	33	24	3114	3.1
49	0	43	55	21	2657	4.5
50	1	38	71	22	2599	5.1
51	1	27	85	21	1340	10.0