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	1708	0.7
41	0	10	3	1	2019	0.7
42	0	15	11	9	2341	1.5
43	0	13	12	7	2504	1.3
44	0	15	9	16	2605	1.5
45	0	12	10	24	2906	1.6
46	0	32	29	20	2973	2.7
47	0	16	22	20	2987	1.9
48	0	61	38	32	3541	3.7
49	0	76	63	30	3288	5.1
50	1	88	97	37	3683	6.1
51	1	97	242	41	3534	10.8
52	0	127	429	58	4242	14.5
01	2	87	533	74	4177	16.7
02	0	50	299	41	2672	14.6