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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	2034	0.7
42	0	15	11	10	2363	1.5
43	0	13	12	7	2583	1.2
44	0	15	10	16	2725	1.5
45	0	12	10	24	3002	1.5
46	0	32	29	20	3091	2.6
47	0	16	22	20	3079	1.9
48	0	61	39	32	3665	3.6
49	0	79	62	30	3426	5.0
50	1	94	98	38	3866	6.0
51	1	110	242	43	3702	10.7
52	0	163	440	77	4686	14.5
01	2	141	605	89	4858	17.2
02	1	110	461	85	4144	15.9
03	0	49	481	63	3214	18.5