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	6361	13.33
47	0	7	586	0	406	360	7106	19.12
48	0	17	990	0	532	495	8880	22.91
49	0	36	1733	0	979	673	11461	29.85
50	0	49	2572	0	1141	821	13885	33.01
51	0	54	3529	0	1251	1096	15667	37.85
52	0	78	3672	0	1532	1162	16880	38.18
01	0	85	3643	0	1652	1097	18223	35.54
02	0	97	3890	0	1790	1150	20145	34.39
03	0	114	3123	0	1644	1086	19363	30.82
04	0	129	2383	0	1535	1101	17241	29.86
05	0	122	1888	0	954	1087	14874	27.24
06	0	121	1183	0	711	1085	13389	23.15
07	0	69	805	0	492	1072	11666	20.9
08	0	74	557	0	365	1121	10593	19.98
09	0	56	404	0	294	1076	9677	18.91
10	0	67	312	0	201	1092	9112	18.35
11	0	46	211	0	192	1028	8853	16.68
12	0	35	172	0	137	913	7974	15.76
13	0	36	113	0	92	751	6739	14.72
14	0	31	120	0	101	641	6312	14.15
15	0	44	67	0	63	457	5779	10.92
16	0	26	73	0	41	311	5175	8.71
17	0	33	61	0	46	238	4469	8.46
18	0	14	53	0	29	185	4223	6.65
19	0	9	33	0	27	156	3781	5.95
20	0	5	20	0	18	106	3053	4.88
21	0	5	2	0	18	58	2444	3.4