INFLUENZA VIRUSES ISOLATED BY
WHO/NREVSS Collaborating Laboratories
2005 - 2006 Season

Year/Week (YYWW)	Number of Labs Reporting	Total Specimens Tested	A(H1N1) & A(H1N2)	A(H3N2)	A(Unk)	B	Total # Tested	% Positive
0540	121	1894	0	6	4	1	11	0.58
0541	121	2191	0	6	4	2	12	0.55
0542	131	2349	0	12	8	5	25	1.06
0543	135	2780	0	6	6	2	14	0.5
0544	141	2890	0	13	7	3	23	0.8
0545	134	3320	1	21	14	7	43	1.3
0546	140	3861	2	18	23	4	47	1.22
0547	132	3268	0	19	30	3	52	1.59
0548	134	4056	1	57	56	2	116	2.86
0549	140	3863	1	126	79	8	214	5.54
0550	139	4618	0	269	125	5	399	8.64
0551	145	5418	1	296	383	11	691	12.75
0552	142	5829	2	336	425	23	786	13.48
0601	143	6417	1	259	468	24	752	11.72
0602	148	6378	4	297	520	22	843	13.22
0603	153	6255	4	285	565	29	883	14.12
0604	147	6732	4	308	714	33	1059	15.73
0605	153	7029	6	314	779	74	1173	16.69
0606	152	7226	9	321	825	142	1297	17.95
0607	154	8105	17	372	1013	184	1586	19.57
0608	152	7948	16	364	1003	242	1625	20.45
0609	147	7978	29	435	942	396	1802	22.59
0610	149	7819	54	411	881	408	1754	22.43
0611	141	6995	40	276	624	441	1381	19.74
0612	142	6444	79	181	498	432	1190	18.47
0613	147	5424	63	134	340	438	975	17.98
0614	128	4459	38	53	202	312	605	13.57
0615	122	4032	24	51	142	241	458	11.36
0616	123	3499	24	30	74	218	346	9.89
0617	121	2675	10	2	53	135	200	7.48
0618	113	2516	7	7	53	128	195	7.75
0619	111	2453	12	0	49	116	177	7.22
0620	112	2399	6	1	41	87	135	5.63
0621	102	2058	9	0	28	93	130	6.32
0622	100	1663	9	0	19	50	78	4.69
0623	92	1444	9	0	8	38	55	3.81
0624	88	1267	3	0	11	11	25	1.97
0625	85	1178	2	0	2	10	14	1.19
0626	78	1017	3	1	2	6	12	1.18
0627	84	907	2	0	4	2	8	0.88
0628	82	914	0	1	6	0	7	0.77
0629	80	917	0	0	9	2	11	1.2
0630	78	863	6	1	8	2	17	1.97
0631	80	943	3	0	16	1	20	2.12
0632	80	899	1	0	9	2	12	1.33
0633	78	862	3	0	7	2	12	1.39
0634	77	898	3	0	9	3	15	1.67
0635	72	907	5	0	8	4	17	1.87
0636	67	881	5	0	8	0	13	1.48
0637	66	1067	13	0	17	1	31	2.91
0638	60	996	22	0	11	2	35	3.51
0639	50	971	13	0	13	3	29	2.99
Totals	6012	179772	566	5289	11145	4410	21410	11.91