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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	4313	3.76
41	0	7	67	0	25	98	4685	4.2
42	0	4	127	0	47	121	4975	6.01
43	0	3	147	0	49	139	4860	6.95
44	0	4	180	0	73	151	5110	7.98
45	0	5	269	0	114	230	6039	10.23
46	0	8	359	0	211	262	6270	13.43
47	0	7	553	0	406	360	6988	18.98
48	0	17	946	0	508	485	8531	22.93
49	0	35	1678	0	920	660	10958	30.05
50	0	41	2389	0	1098	723	12937	32.86
51	0	35	2617	0	1048	786	12220	36.71
52	0	25	1209	0	1112	615	9363	31.62