INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2012 - 2013 Season

Week	A(H1)	A(2009 H1N1)	A(H3)	A(unable to sub-type)	A(Subtyping not performed)	B	Total # Tested	% Positive
40	0	3	70	0	10	78	4343	3.71
41	0	7	67	0	25	98	4715	4.18
42	0	4	126	0	47	121	5008	5.95
43	0	3	148	0	49	139	4912	6.9
44	0	4	181	0	73	151	5150	7.94
45	0	5	265	0	114	230	6129	10.02
46	0	8	366	0	210	262	6360	13.33
47	0	7	586	0	406	360	7106	19.12
48	0	17	990	0	532	495	8880	22.91
49	0	38	1733	0	978	674	11462	29.86
50	0	49	2576	0	1141	823	13892	33.03
51	0	54	3535	0	1251	1096	15673	37.87
52	0	79	3737	0	1532	1162	16946	38.42
01	0	85	3656	0	1665	1106	18375	35.44
02	0	98	3897	0	1801	1156	20322	34.21
03	0	114	3124	0	1650	1093	19510	30.66
04	0	129	2383	0	1543	1112	17385	29.72
05	0	123	1890	0	961	1103	15194	26.83
06	0	122	1184	0	719	1100	13667	22.87
07	0	69	806	0	496	1086	11942	20.57
08	0	76	558	0	367	1135	10794	19.79
09	0	57	405	0	295	1091	9877	18.71
10	0	67	311	0	205	1097	9289	18.09
11	0	46	211	0	195	1044	9048	16.53
12	0	35	173	0	137	924	8165	15.54
13	0	37	113	0	93	764	6987	14.41
14	0	31	120	0	102	645	6486	13.85
15	0	45	67	0	64	467	5956	10.8
16	0	28	74	0	46	311	5354	8.57
17	0	33	61	0	46	240	4679	8.12
18	0	15	54	0	29	204	4449	6.79
19	0	12	36	0	27	159	4031	5.81
20	0	11	24	0	20	127	3728	4.88
21	0	13	18	0	21	112	3648	4.5
22	0	14	14	0	28	94	3262	4.6
23	0	11	12	0	29	80	3245	4.07
24	0	21	12	0	32	62	2937	4.32
25	0	27	10	0	32	54	2891	4.32
26	0	34	5	0	22	28	2647	3.59
27	0	13	12	0	23	25	2321	3.32
28	0	6	27	0	33	13	2390	3.31
29	0	5	12	0	25	14	2260	2.52
30	0	11	9	0	24	9	1939	2.78
31	0	8	12	0	27	20	2068	3.34
32	0	13	9	0	23	5	1882	2.66
33	0	7	0	0	28	4	1253	3.11