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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	3457	2.05
45	13	10	47	11	3708	2.18
46	22	4	55	2	3995	2.08
47	32	2	90	12	3962	3.43
48	42	12	50	12	4595	2.52
49	32	10	112	22	4742	3.71
50	49	19	115	27	5018	4.18
51	67	27	160	50	5616	5.41
52	68	20	260	82	5997	7.17
01	75	51	322	104	6544	8.44
02	162	126	539	157	7118	13.82
03	197	181	708	201	7355	17.5
04	200	328	1184	321	8897	22.85
05	241	573	2155	591	12278	28.99
06	244	755	2530	794	13601	31.78
07	182	713	2355	922	13084	31.89
08	160	847	2392	1199	15095	30.46
09	111	718	1797	1208	13805	27.77
10	59	538	1254	1126	12983	22.93
11	62	396	774	891	9787	21.69
12	37	216	494	670	7636	18.56
13	7	85	307	502	5757	15.65
14	11	41	211	345	4217	14.42
15	5	24	105	216	2935	11.93