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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	4912	6.9
44	0	4	181	0	73	151	5150	7.94
45	0	5	269	0	114	231	6134	10.09
46	0	8	366	0	210	265	6364	13.37
47	0	8	592	0	406	362	7115	19.23
48	0	17	992	0	532	497	8884	22.94
49	0	36	1739	0	979	678	11471	29.92
50	0	49	2572	0	1141	822	13885	33.01
51	0	54	3529	0	1251	1096	15667	37.85
52	0	78	3673	0	1532	1162	16881	38.18
01	0	84	3638	0	1653	1097	18217	35.53
02	0	96	3890	0	1767	1145	20014	34.47
03	0	113	3120	0	1624	1078	19227	30.87
04	0	129	2383	0	1528	1092	17140	29.94
05	0	122	1888	0	951	1078	14795	27.3
06	0	121	1181	0	706	1051	13259	23.07
07	0	69	798	0	486	1033	11468	20.81
08	0	74	548	0	363	1085	10407	19.89
09	0	49	392	0	289	1047	9508	18.69
10	0	60	301	0	200	1055	8908	18.14
11	0	41	202	0	191	979	8599	16.43
12	0	28	157	0	133	854	7692	15.24
13	0	31	85	0	91	659	6219	13.93
14	0	13	39	0	88	344	4462	10.85