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	71	0	10	79	4345	3.75
41	0	7	67	0	25	98	4716	4.18
42	0	4	128	0	47	121	5009	5.99
43	0	3	148	0	49	139	4913	6.9
44	0	4	180	0	73	151	5148	7.93
45	0	5	269	0	114	231	6135	10.09
46	0	8	366	0	210	265	6366	13.37
47	0	8	589	0	406	362	7112	19.19
48	0	17	978	0	532	497	8874	22.81
49	0	36	1727	0	979	678	11459	29.85
50	0	49	2548	0	1141	822	13862	32.9
51	0	54	3479	0	1251	1096	15623	37.64
52	0	77	3666	0	1531	1156	16863	38.13
01	0	82	3619	0	1612	1084	17695	36.15
02	0	93	3855	0	1715	1120	19454	34.87
03	0	112	3079	0	1596	1046	18741	31.12
04	0	125	2330	0	1477	1045	16524	30.12
05	0	120	1818	0	899	1019	14128	27.29
06	0	86	879	0	710	861	11711	21.65
07	0	32	328	0	392	619	8144	16.83