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	1752	0.7
41	0	10	3	1	2049	0.7
42	0	16	11	10	2401	1.5
43	0	13	12	7	2624	1.2
44	0	19	10	16	2773	1.6
45	0	28	10	24	3059	2.0
46	0	41	29	20	3144	2.9
47	0	18	22	21	3113	2.0
48	0	64	40	32	3832	3.5
49	0	88	64	32	3533	5.2
50	1	106	107	45	4208	6.2
51	1	178	241	54	4129	11.5
52	0	322	430	121	5375	16.2
01	2	391	648	152	6152	19.4
02	2	289	566	160	5860	17.4
03	2	343	822	189	6192	21.9
04	1	472	976	260	7173	23.8
05	0	633	1126	354	7610	27.8
06	2	583	1332	394	8482	27.2
07	1	501	1103	451	8068	25.5
08	1	389	932	429	7388	23.7
09	0	137	805	356	6026	21.5
10	0	88	440	229	3857	19.6