INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2002 - 2003 Season

Week	A(H1N1) & A(H1N2)	A(H3N2)	A(Unk)	B	Total # Tested	% Positive
40	0	0	0	0	1451	0.0
41	1	0	1	1	1567	0.2
42	0	0	0	0	1622	0.0
43	3	0	1	1	1803	0.3
44	0	0	2	3	1642	0.3
45	0	2	0	3	2012	0.2
46	0	0	6	4	2113	0.5
47	2	0	5	16	2117	1.1
48	1	1	5	6	1903	0.7
49	4	3	4	30	2420	1.7
50	7	1	14	74	2480	3.9
51	17	0	23	143	2947	6.2
52	16	6	17	145	2597	7.1
01	27	8	28	110	2896	6.0
02	49	17	41	180	3071	9.3
03	62	9	84	267	3275	12.9
04	76	19	138	351	3379	17.3
05	133	38	188	466	4031	20.5
06	212	29	331	630	4812	25.0
07	169	34	283	485	4403	22.1
08	138	47	231	307	3685	19.6
09	123	20	143	225	2597	19.7
10	49	6	42	70	908	18.4