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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	4686	4.2
42	0	4	127	0	47	121	4975	6.01
43	0	3	148	0	49	139	4870	6.96
44	0	4	180	0	73	151	5111	7.98
45	0	5	269	0	114	230	6049	10.22
46	0	8	359	0	211	261	6268	13.42
47	0	7	555	0	406	360	6993	18.99
48	0	17	954	0	527	497	8734	22.84
49	0	35	1690	0	964	677	11251	29.92
50	0	43	2464	0	1138	804	13550	32.83
51	0	41	3096	0	1236	1044	14828	36.53
52	0	43	2461	0	1542	1062	14507	35.21
01	0	36	1783	0	1550	853	12876	32.79