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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	2282	1.67
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	3752	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	180	712	203	7520	17.19
04	202	333	1192	328	9029	22.76
05	241	586	2249	627	12887	28.73
06	247	767	2690	844	14361	31.67
07	189	725	2493	999	13868	31.77
08	169	872	2534	1267	15988	30.29
09	113	742	1962	1283	14683	27.92
10	60	566	1397	1215	13876	23.34
11	64	411	902	1038	10976	22
12	45	340	594	857	9031	20.33
13	11	129	408	741	7234	17.82
14	11	75	267	482	5638	14.81
15	5	42	147	370	4634	12.17
16	0	19	86	197	3508	8.61
17	4	4	41	91	2709	5.17
18	1	1	30	45	1714	4.49