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	4920	6.89
44	0	4	181	0	73	151	5150	7.94
45	0	5	265	0	114	230	6131	10.01
46	0	8	366	0	210	262	6364	13.32
47	0	7	586	0	406	360	7112	19.11
48	0	17	952	0	532	484	8792	22.58
49	0	38	1662	0	978	668	11365	29.44
50	0	49	2577	0	1141	823	13896	33.03
51	0	54	3535	0	1251	1097	15675	37.88
52	0	79	3738	0	1532	1161	16955	38.4
01	0	85	3658	0	1665	1106	18379	35.44
02	0	98	3897	0	1801	1156	20328	34.2
03	0	114	3125	0	1650	1093	19516	30.65
04	0	129	2383	0	1543	1112	17391	29.71
05	0	123	1890	0	961	1103	15197	26.83
06	0	122	1184	0	719	1100	13673	22.86
07	0	69	806	0	496	1086	11946	20.57
08	0	76	558	0	367	1135	10795	19.79
09	0	57	405	0	295	1091	9879	18.71
10	0	67	311	0	205	1097	9292	18.08
11	0	46	211	0	195	1045	9055	16.53
12	0	35	173	0	137	924	8172	15.53
13	0	37	113	0	93	764	6994	14.4
14	0	31	120	0	102	645	6491	13.83
15	0	45	67	0	64	468	5959	10.81
16	0	28	74	0	46	311	5357	8.57
17	0	33	61	0	46	240	4675	8.13
18	0	15	54	0	29	204	4457	6.78
19	0	12	36	0	27	159	4035	5.8
20	0	11	24	0	20	127	3733	4.88
21	0	13	18	0	21	112	3650	4.49
22	0	14	14	0	28	94	3267	4.59
23	0	11	12	0	29	83	3253	4.15
24	0	21	12	0	32	62	2946	4.31
25	0	27	11	0	32	54	2900	4.34
26	0	34	5	0	22	28	2672	3.56
27	0	13	13	0	26	25	2347	3.45
28	0	17	29	0	40	14	2440	4.1
29	0	17	13	0	28	14	2309	3.16
30	0	14	10	0	29	10	2067	3.1
31	0	20	14	0	31	20	2278	3.82
32	0	26	11	0	26	12	2258	3.32
33	0	13	3	0	32	10	1968	2.95
34	0	9	4	0	41	3	2187	2.65
35	0	39	3	0	67	10	2674	4.49
36	0	12	4	0	74	12	2628	3.88
37	0	21	4	0	59	6	2906	3.1
38	0	6	1	0	55	17	2393	3.3