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INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2008 - 2009 Season

Week	A(H1)	A(H3)	A(Unk)	B	Total # Tested	% Positive
40	3	0	8	6	2598	0.65
41	4	4	8	6	2632	0.84
42	13	3	15	6	2746	1.35
43	22	0	24	14	3198	1.88
44	12	3	21	5	3320	1.23
45	32	2	23	11	3920	1.73
46	25	2	23	12	4145	1.5
47	27	1	31	23	4540	1.81
48	40	1	47	24	4636	2.42
49	43	5	57	14	5355	2.22
50	71	9	66	37	5788	3.16
51	73	19	108	56	6057	4.23
52	71	12	153	51	5829	4.92
53	113	19	171	48	6312	5.56
01	165	26	284	82	6695	8.32
02	196	22	421	96	6787	10.83
03	340	44	620	186	7596	15.67
04	556	76	897	359	9009	20.96
05	674	52	1359	671	11461	24.05
06	811	63	1337	911	12472	25.03
07	813	65	1071	893	11498	24.72
08	667	59	1002	1097	11717	24.11
09	513	57	886	1080	10464	24.24
10	323	58	643	985	9185	21.87
11	287	59	428	830	8145	19.69
12	203	37	280	560	6647	16.25
13	88	23	158	397	5014	13.28
14	64	24	122	209	4215	9.94
15	23	12	70	119	3417	6.56
16	19	27	70	56	2486	6.92
17	5	2	14	0	188	11.17