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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	6365	13.37
47	0	8	589	0	406	362	7112	19.19
48	0	17	984	0	532	497	8876	22.87
49	0	36	1729	0	979	678	11461	29.86
50	0	49	2549	0	1141	822	13863	32.9
51	0	54	3488	0	1251	1097	15628	37.69
52	0	78	3670	0	1531	1160	16876	38.15
01	0	84	3639	0	1612	1085	17731	36.21
02	0	96	3884	0	1715	1127	19503	34.98
03	0	113	3109	0	1596	1065	18817	31.26
04	0	128	2365	0	1503	1082	16795	30.24
05	0	122	1874	0	951	1072	14708	27.33
06	0	114	1154	0	706	1029	13112	22.9
07	0	69	748	0	478	969	11121	20.36
08	0	58	431	0	350	950	9471	18.89
09	0	22	149	0	214	689	6259	17.16