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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	78	4328	3.74
41	0	7	67	0	25	98	4698	4.19
42	0	4	127	0	47	121	4992	5.99
43	0	3	147	0	49	139	4893	6.91
44	0	4	180	0	73	151	5127	7.96
45	0	5	269	0	114	231	6114	10.12
46	0	8	359	0	211	264	6340	13.31
47	0	8	571	0	409	360	7074	19.06
48	0	17	957	0	534	497	8835	22.69
49	0	35	1698	0	968	677	11344	29.78
50	0	45	2501	0	1138	807	13716	32.74
51	0	44	3268	0	1266	1080	15291	37
52	0	48	3205	0	1567	1111	16237	36.53
01	0	54	2858	0	1675	1001	16414	34.04
02	0	45	1603	0	1355	635	12360	29.43