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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	6365	13.37
47	0	8	589	0	407	362	7113	19.2
48	0	17	983	0	532	497	8875	22.86
49	0	36	1729	0	979	678	11461	29.86
50	0	49	2548	0	1141	822	13862	32.9
51	0	54	3488	0	1251	1096	15627	37.68
52	0	77	3667	0	1531	1160	16869	38.15
01	0	82	3620	0	1612	1084	17701	36.14
02	0	93	3863	0	1715	1122	19469	34.89
03	0	113	3091	0	1596	1054	18774	31.18
04	0	127	2349	0	1477	1048	16558	30.2
05	0	122	1861	0	895	1025	14198	27.49
06	0	112	1119	0	668	984	12597	22.89
07	0	53	640	0	443	869	10163	19.73
08	0	39	244	0	322	683	7609	16.93