INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2010 - 2011 Season

Week	A(H1)	A(2009 H1N1)	A(H3)	A(unable to sub-type)	A(Subtyping not performed)	B	Total # Tested	% Positive
40	0	7	17	0	29	23	3698	2.06
41	0	13	38	0	43	35	4074	3.17
42	0	8	35	0	53	46	4217	3.37
43	0	13	54	0	47	53	4268	3.91
44	0	12	61	0	68	104	4692	5.22
45	0	15	76	0	95	164	5481	6.39
46	0	23	116	0	109	237	5718	8.48
47	0	11	146	0	157	267	5585	10.4
48	0	34	181	0	133	259	6133	9.9
49	0	46	353	0	131	309	6268	13.39
50	0	84	544	0	278	527	7483	19.15
51	0	97	777	0	447	664	7922	25.06
52	0	190	981	0	531	653	8989	26.2
01	0	325	1159	0	590	573	10402	25.45
02	0	545	1194	0	684	599	10184	29.67
03	0	826	1411	0	743	730	11034	33.62
04	0	1049	1476	0	936	964	12829	34.49
05	0	1202	1430	0	1107	1121	13624	35.67
06	0	1250	1452	0	1153	1167	14416	34.84
07	0	1425	1521	0	1412	1375	16179	35.43
08	0	1142	1212	0	1011	1190	14165	32.16
09	0	956	997	0	740	885	12775	28.01
10	0	676	801	0	501	688	11220	23.76
11	0	438	572	0	374	555	9543	20.32
12	0	259	418	0	266	396	8192	16.35
13	0	176	278	0	171	283	6846	13.26
14	0	89	196	0	93	248	6288	9.96
15	0	48	142	0	56	148	5234	7.53
16	0	33	55	0	28	78	4305	4.51
17	0	10	27	0	29	60	3658	3.44
18	0	11	18	0	10	23	2959	2.1
19	0	3	11	0	8	14	2811	1.28
20	0	0	5	0	4	9	2472	0.73
21	0	2	4	0	6	4	2162	0.74
22	0	1	0	0	5	4	1859	0.54
23	0	0	0	0	1	4	1655	0.3
24	0	1	1	0	5	0	1541	0.45
25	0	2	0	0	0	2	1214	0.33
26	0	0	0	0	1	0	573	0.17