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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	6366	13.37
47	0	8	589	0	406	362	7112	19.19
48	0	17	978	0	532	497	8872	22.81
49	0	35	1708	0	979	677	11437	29.72
50	0	45	2536	0	1141	822	13848	32.81
51	0	50	3447	0	1251	1096	15581	37.51
52	0	73	3603	0	1532	1150	16788	37.87
01	0	80	3591	0	1609	1073	17642	36.01
02	0	89	3767	0	1583	998	18634	34.54
03	0	97	2957	0	1396	953	17512	30.85
04	0	100	2014	0	1240	811	14794	28.15
05	0	74	1026	0	640	622	10132	23.31