INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2008 - 2009 Season

Week	A(H1)	A(Novel H1N1)	A(H3)	A(Could Not Subtyped)	A(Unk)	B	Total # Tested	% Positive
40	3	0	0	0	8	6	2606	0.65
41	4	0	4	0	8	6	2633	0.84
42	13	0	3	0	15	6	2746	1.35
43	22	0	0	0	24	14	3198	1.88
44	12	0	3	0	21	5	3320	1.23
45	32	0	2	0	23	11	3922	1.73
46	25	0	2	0	23	12	4146	1.5
47	27	0	1	0	31	23	4540	1.81
48	40	0	1	0	47	24	4636	2.42
49	43	0	6	0	57	14	5356	2.24
50	71	0	9	0	66	37	5788	3.16
51	73	0	19	0	108	56	6057	4.23
52	71	0	12	0	153	51	5830	4.92
53	115	0	19	0	171	48	6314	5.59
01	165	0	27	0	285	82	6700	8.34
02	198	0	22	0	423	97	6830	10.83
03	341	0	44	0	623	186	7601	15.71
04	558	0	77	0	898	359	9013	20.99
05	675	0	52	0	1359	672	11466	24.05
06	815	0	63	0	1367	916	12592	25.1
07	818	0	65	1	1068	894	11502	24.74
08	676	0	59	0	1003	1097	11728	24.17
09	534	0	57	0	882	1086	10492	24.39
10	371	0	63	0	638	1002	9267	22.38
11	354	0	63	0	429	874	8308	20.7
12	258	0	41	0	283	602	6947	17.04
13	109	0	25	0	165	433	5331	13.73
14	88	0	31	1	125	250	4709	10.51
15	37	0	28	0	74	166	4121	7.4
16	40	13	31	3	79	94	3606	7.21
17	486	757	553	197	372	549	21700	13.43
18	341	1200	364	162	802	285	20603	15.31
19	86	944	103	38	397	63	10036	16.25
20	24	1096	70	117	116	27	6469	22.41