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

Week	A(H1)	2009 A H1N1	A(H3)	A(unable to sub-type)	A(Subtyping not performed)	B	Total # Tested	% Positive
40	0	8	21	0	29	23	3671	2.21
41	0	14	35	0	43	31	4047	3.04
42	0	7	34	0	53	43	4178	3.28
43	0	14	53	0	47	49	4215	3.87
44	0	11	64	0	68	99	4664	5.19
45	0	14	66	0	94	162	5429	6.19
46	0	24	116	0	109	230	5671	8.45
47	0	12	143	0	156	260	5520	10.34
48	0	32	173	0	130	253	5871	10.02
49	0	47	310	0	125	300	5784	13.52
50	0	83	505	0	276	509	7080	19.39
51	0	97	709	0	424	640	7392	25.3
52	0	189	878	0	497	636	8414	26.15
01	0	320	1071	0	534	558	9677	25.66
02	0	531	1076	0	621	579	9541	29.42
03	0	826	1291	0	682	706	10397	33.71
04	0	1045	1419	0	873	936	12187	35.06
05	0	1180	1389	0	1047	1085	12995	36.18
06	0	1277	1414	0	1091	1136	13932	35.3
07	0	1413	1479	0	1347	1315	15591	35.62
08	0	1138	1195	0	953	1123	13563	32.51
09	0	903	966	0	709	824	12247	27.78
10	0	662	765	0	477	641	10709	23.77
11	0	456	556	0	356	498	9087	20.53
12	0	259	397	0	255	353	7769	16.27
13	0	180	270	0	155	242	6212	13.63
14	0	87	188	0	89	210	5590	10.27
15	0	33	113	0	43	130	4129	7.73
16	0	5	32	0	13	38	2072	4.25