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	984	0.8
41	0	2	3	0	1284	0.4
42	0	3	4	0	1232	0.6
43	0	7	8	0	1396	1.1
44	1	6	6	0	1512	0.9
45	0	12	1	0	1655	0.8
46	0	36	7	1	1887	2.3
47	0	25	2	3	1806	1.7
48	0	50	20	1	2045	3.5
49	1	33	41	5	2059	3.9
50	2	33	68	2	2130	4.9
51	3	42	109	3	2562	6.1
52	0	45	163	1	2312	9.0
01	0	101	216	2	3141	10.2
02	2	121	367	6	3351	14.8
03	1	240	590	5	4031	20.7
04	8	342	741	11	5041	21.9
05	3	396	922	20	5392	24.9
06	7	536	914	15	6006	24.5
07	4	488	1120	20	6489	25.2
08	9	420	1143	49	6156	26.3
09	8	294	821	74	4614	25.9
10	2	189	597	90	3888	22.6
11	3	88	371	113	2876	20.0