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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	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	3145	2.9
47	0	18	22	21	3113	2.0
48	0	64	40	32	3831	3.5
49	0	88	64	32	3534	5.2
50	1	107	107	45	4208	6.2
51	1	178	241	54	4130	11.5
52	0	324	428	122	5378	16.3
01	2	394	648	152	6156	19.4
02	2	290	566	161	5840	17.4
03	2	347	822	191	6198	22.0
04	1	474	977	275	7218	23.9
05	0	638	1141	368	7688	27.9
06	2	599	1344	409	8616	27.3
07	1	523	1113	473	8338	25.3
08	1	406	944	448	7580	23.7
09	0	163	843	398	6412	21.9
10	0	98	541	306	5319	17.8
11	1	33	359	246	3763	17.0