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	4073	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	1452	0	1155	1172	14441	34.79
07	0	1413	1521	0	1413	1375	16168	35.39
08	0	1138	1215	0	1011	1189	14164	32.14
09	0	950	997	0	740	884	12768	27.97
10	0	667	801	0	501	688	11211	23.7
11	0	437	572	0	374	555	9542	20.31
12	0	258	418	0	266	398	8193	16.36
13	0	175	280	0	171	283	6847	13.28
14	0	88	196	0	93	250	6289	9.97
15	0	44	142	0	56	149	5231	7.47
16	0	30	55	0	28	79	4304	4.46
17	0	9	27	0	29	60	3659	3.42
18	0	11	18	0	10	23	3019	2.05
19	0	2	11	0	8	14	2857	1.23
20	0	0	5	0	4	9	2518	0.71
21	0	2	4	0	6	4	2246	0.71
22	0	1	0	0	5	5	1973	0.56
23	0	0	0	0	1	4	1784	0.28
24	0	2	1	0	6	0	1654	0.54
25	0	0	0	0	0	2	1554	0.13
26	0	2	0	0	1	1	1156	0.35
27	0	2	1	0	0	1	1008	0.4
28	0	0	3	0	0	0	684	0.44
29	0	0	0	0	0	2	474	0.42