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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	6136	10.09
46	0	8	365	0	211	265	6366	13.37
47	0	8	571	0	408	361	7095	19.01
48	0	17	968	0	532	497	8861	22.73
49	0	35	1707	0	979	677	11434	29.72
50	0	45	2519	0	1141	822	13830	32.73
51	0	50	3432	0	1251	1096	15560	37.46
52	0	71	3595	0	1533	1141	16763	37.83
01	0	72	3538	0	1614	1063	17536	35.86
02	0	82	3496	0	1581	945	18154	33.63
03	0	83	2383	0	1146	815	15444	28.66
04	0	54	1053	0	1034	560	10581	25.53