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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	4701	3.74
50	49	19	115	27	4976	4.22
51	60	26	160	49	5552	5.31
52	55	18	259	76	6983	5.84
01	63	46	316	98	6414	8.15
02	141	117	537	143	6960	13.48
03	175	158	702	191	7176	17.08
04	159	292	1175	284	8549	22.34
05	194	509	2066	524	11521	28.58
06	161	618	2171	639	11566	31.03
07	102	507	2054	728	10620	31.93
08	67	437	1193	624	7726	30.04