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INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2007 - 2008 Season

Week	A(H1)	A(H3)	A(Unk)	B	Total # Tested	% Positive
40	11	2	20	4	2257	1.64
41	11	3	22	1	2486	1.49
42	10	2	28	1	2870	1.43
43	9	2	27	6	3033	1.45
44	8	0	53	10	3425	2.07
45	13	10	47	10	3677	2.18
46	22	4	55	0	3964	2.04
47	32	2	90	12	3954	3.44
48	42	12	50	12	4552	2.55
49	32	10	112	22	4702	3.74
50	49	19	115	27	4977	4.22
51	67	27	160	50	5566	5.46
52	65	20	259	81	7016	6.06
01	74	51	321	104	6496	8.47
02	162	126	537	157	7082	13.87
03	195	181	707	201	7317	17.55
04	200	328	1182	321	8844	22.96
05	240	571	2147	588	12171	29.13
06	239	754	2509	783	13420	31.93
07	179	688	2332	895	12891	31.76
08	153	820	2367	1172	14843	30.4
09	105	665	1768	1173	13518	27.45
10	53	486	1226	1023	12304	22.66
11	57	357	727	730	8600	21.76
12	33	193	458	548	6127	20.11
13	6	61	244	392	3964	17.73