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	2033	0.7
42	0	15	11	10	2368	1.5
43	0	13	12	7	2510	1.3
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	4129	6.1
51	1	160	242	53	4036	11.3
52	0	280	452	116	5307	16.0
01	2	341	650	146	5903	19.3
02	2	241	535	137	4924	18.6
03	1	260	769	152	5400	21.9
04	1	277	937	208	6227	22.9
05	0	394	927	257	5900	26.7
06	0	180	603	129	3610	25.3