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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	711	203	7520	17.18
04	202	333	1189	328	9029	22.73
05	241	586	2174	595	12417	28.96
06	247	767	2538	800	13794	31.55
07	189	725	2364	931	13241	31.79
08	169	872	2418	1211	15299	30.52
09	113	742	1862	1223	14028	28.09
10	60	566	1346	1148	13241	23.56
11	64	409	816	939	10041	22.19
12	44	331	541	750	8196	20.33
13	9	111	342	620	6312	17.14
14	11	57	229	405	4833	14.53
15	5	31	123	294	3941	11.49
16	0	16	63	153	2696	8.61
17	4	4	15	60	1396	5.95