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	824	1411	0	743	730	11032	33.61
04	0	1048	1476	0	936	964	12828	34.49
05	0	1202	1430	0	1107	1121	13624	35.67
06	0	1245	1451	0	1153	1170	14437	34.76
07	0	1413	1521	0	1413	1375	16167	35.39
08	0	1138	1212	0	1011	1189	14161	32.13
09	0	949	997	0	740	884	12766	27.96
10	0	667	801	0	501	688	11211	23.7
11	0	437	572	0	374	555	9542	20.31
12	0	257	418	0	266	396	8190	16.32
13	0	175	278	0	171	283	6821	13.3
14	0	88	196	0	93	248	6278	9.96
15	0	44	139	0	58	148	5213	7.46
16	0	30	55	0	29	78	4290	4.48
17	0	9	26	0	29	60	3644	3.4
18	0	11	18	0	10	23	2902	2.14
19	0	2	11	0	8	14	2748	1.27
20	0	0	5	0	3	9	2394	0.71
21	0	2	4	0	6	4	1949	0.82
22	0	1	0	0	5	2	1674	0.48
23	0	0	0	0	1	2	1197	0.25
24	0	1	1	0	4	0	779	0.77