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INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2001 - 2002 Season

Week	A(H1N1) & A(H1N2)	A(H3N2)	A(Unk)	B	Total # Tested	% Positive
40	0	4	3	1	981	0.8
41	0	2	3	0	1279	0.4
42	0	3	4	0	1226	0.6
43	0	7	8	0	1398	1.1
44	1	6	6	0	1512	0.9
45	0	12	1	0	1658	0.8
46	0	36	7	1	1886	2.3
47	0	25	2	3	1800	1.7
48	0	50	20	1	2045	3.5
49	1	32	41	5	2048	3.9
50	2	33	68	2	2125	4.9
51	3	42	109	3	2556	6.1
52	0	44	163	1	2303	9.0
01	0	91	219	2	2996	10.4
02	1	114	324	6	3174	14.0
03	1	215	471	5	3662	18.9
04	3	283	681	10	4605	21.2
05	3	264	761	14	4480	23.3
06	2	302	531	9	3842	22.0
07	0	174	328	5	2398	21.1