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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	5	2283	1.66
41	11	3	22	1	2509	1.47
42	11	2	28	2	2899	1.48
43	9	2	27	6	3061	1.44
44	8	0	53	11	3488	2.06
45	13	10	47	11	3753	2.16
46	22	4	55	2	4046	2.05
47	32	2	90	12	4016	3.39
48	42	12	50	12	4600	2.52
49	32	10	112	22	4796	3.67
50	49	19	115	27	5093	4.12
51	67	27	160	50	5701	5.33
52	68	20	260	82	6071	7.08
01	76	51	322	104	6639	8.33
02	162	130	540	159	7226	13.71
03	198	181	712	203	7521	17.21
04	202	333	1192	328	9031	22.75
05	241	588	2249	627	12889	28.75
06	247	770	2691	844	14365	31.69
07	189	725	2506	1005	14114	31.35
08	169	873	2537	1271	16205	29.93
09	113	744	2052	1345	15434	27.56
10	60	567	1468	1301	14563	23.32
11	64	411	905	1041	11150	21.71
12	45	341	598	861	9168	20.12
13	11	129	414	743	7387	17.56
14	11	75	269	485	5770	14.56
15	5	42	147	374	4769	11.91
16	0	19	87	201	3641	8.43
17	4	5	43	104	2965	5.26
18	1	2	33	57	2103	4.42
19	0	0	15	20	1237	2.83