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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	2256	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	3676	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	4977	4.22
51	60	26	160	49	5552	5.31
52	55	18	259	76	6983	5.84
01	64	46	316	98	6414	8.17
02	143	118	536	143	6960	13.51
03	180	159	707	192	7194	17.21
04	174	310	1181	305	8683	22.69
05	203	550	2159	555	11947	29.02
06	180	689	2410	717	12559	31.82
07	111	556	2161	800	11274	32.18
08	87	552	2036	962	12272	29.64
09	54	327	1280	740	8814	27.24