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	3695	2.06
41	0	13	38	0	43	35	4072	3.17
42	0	8	35	0	53	46	4218	3.37
43	0	13	54	0	47	53	4266	3.91
44	0	12	61	0	68	104	4693	5.22
45	0	15	76	0	95	164	5482	6.38
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	6134	9.9
49	0	46	353	0	131	309	6269	13.38
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	652	8989	26.19
01	0	325	1160	0	590	573	10402	25.46
02	0	545	1190	0	684	596	10177	29.63
03	0	823	1412	0	743	729	11028	33.61
04	0	1050	1474	0	935	964	12828	34.48
05	0	1203	1423	0	1109	1121	13618	35.66
06	0	1243	1446	0	1153	1171	14432	34.74
07	0	1410	1520	0	1413	1375	16166	35.37
08	0	1135	1208	0	1011	1188	14153	32.09
09	0	940	993	0	740	883	12749	27.89
10	0	652	786	0	491	651	10878	23.72
11	0	428	557	0	367	518	9199	20.33
12	0	253	410	0	263	360	7848	16.39
13	0	173	268	0	160	257	6529	13.14
14	0	88	191	0	91	230	6021	9.97
15	0	46	139	0	58	146	5198	7.48
16	0	30	54	0	29	77	4214	4.51
17	0	9	25	0	29	59	3566	3.42
18	0	9	17	0	8	20	2728	1.98
19	0	1	7	0	7	11	2285	1.14
20	0	0	2	0	3	8	1887	0.69
21	0	1	2	0	4	2	789	1.14