North Carolina Influenza Sentinel Surveillance Program

North Carolina Influenza Update

May 25, 2006

I. Influenza-Like Illnesses Reported by N.C. Sentinel Sites
Week Number	Ending	Number ILI	Patient Visits	Percent ILI
40	10/8/2005	28	18,279	0.15%
41	10/15/2005	49	19,163	0.25%
42	10/22/2005	84	22,640	0.37%
43	10/29/2005	85	22,511	0.37%
44	11/5/2005	99	25,608	0.38%
45	11/12/2005	91	23,181	0.39%
46	11/19/2005	114	25,393	0.44%
47	11/26/2005	109	17,987	0.60%
48	12/3/2005	151	25,757	0.58%
49	12/10/2005	171	25,081	0.68%
50	12/17/2005	160	20,705	0.77%
51	12/24/2005	104	16,879	0.61%
52	12/31/2005	161	15,451	1.04%
01	1/7/2006	172	20,266	0.84%
02	1/14/2006	147	25,964	0.56%
03	1/21/2006	187	26,413	0.70%
04	1/28/2006	180	25,252	0.71%
05	2/4/2006	316	26,437	1.19%
06	2/11/2006	354	24,756	1.42%
07	2/18/2006	426	25,292	1.68%
08	2/25/2006	471	24,960	1.88%
09	3/4/2006	523	26,069	2.00%
10	3/11/2006	370	22,776	1.62%
11	3/18/2006	273	21,192	1.28%
12	3/25/2006	235	23,055	1.01%
13	4/01/2006	173	22,178	0.78%
14	4/08/2006	87	18,698	0.46%
15	4/15/2006	81	19,079	0.42%
16	4/22/2006	65	18,084	0.35%
17	4/29/2006	67	16,120	0.41%
18	5/6/2006	68	13,869	0.49%
19	5/13/2006	48	13,614	0.35%
20	05/20/2006	20	10,664	0.18%

Percentage of Visits for Influenza-like Illness
Reported by Sentinel Providers
North Carolina, 2005-2006(Red Line)
With Comparative 2004-2005(Blue Line)
With Comparative 2003-2004 Data(Yellow Line)
and Comparative 2002-2003 Data(Light Blue Line) Graph illustrating the percentage of visits for ILI

Influenza-Like Illness Surveillance in North Carolina, 2005-2006
Comparative trend between two surveillance systems:
Sentinel Provider Network (SPN) and Hospital Emergency Department (ED)
Comparison of the Sentinel Reports with Reports from the Hospital Emergency Departments

Comparison of the Sentinel Reports with Reports from the Hospital Emergency Departments

SPN: 62 volunteer practitioners report weekly their patient workload; using ILI case definition:
"fever and cough or sore throat."
ED: As of 05/20/2006, 81 hospitals report daily ED visits electronically through NC Hospital
Emergency Surveillance System, NCHESS; using ILI case definition:
"one respiratory and one constitutional sign or symptom."

II. Influenza Virus Isolates Identified
by the State Laboratory of Public Health
During the 2005-2006 Influenza Season
Week Number	Ending	Total Confirmed	County	Virus Type	No. Isolates of Same Virus
40	10/8/2005	00	N/A	N/A	N/A
41	10/15/2005	01	Mecklenburg	A/H3	1
42	10/22/2005	00	N/A	N/A	N/A
43	10/29/2005	00	N/A	N/A	N/A
44	11/5/2005	00	N/A	N/A	N/A
45	11/12/2005	00	N/A	N/A	N/A
46	11/19/2005	00	N/A	N/A	N/A
47	11/26/2005	00	N/A	N/A	N/A
48	12/3/2005	01	Durham	A/H3	1
49	12/10/2005	00	N/A	N/A	N/A
50	12/17/2005	01	Wake	A/H3	1
51	12/24/2005	01	Mecklenburg	A/H3	1
52	12/31/2005	03	Mecklenburg	A/H3	1
			Wake	A/H3	1
			Orange	A/H3	1
01	1/7/2006	02	Mitchell	A/H3	1
01	1/7/2006	02	Orange	A/H3	1
02	1/14/2006	05	Brunswick	A/H3	2
			Henderson	A/H3	1
			Wake	A/H3	1
			Wilkes	A/H3	1
03	1/21/2006	10	Cabarrus	A/H3	1
			Durham	A/H3	1
			Guilford	A/H3	1
			Henderson	A/H3	1
			Lee	A/H3	1
			Orange	A/H3	3
			Wake	A/H3	2
04	1/28/2006	19	Forsyth	A/H3	4
			Guilford	A/H3	1
			Orange	A/H3	1
			Pitt	A/H3	1
			Vance	A/H3	1
			Wake	A/H3	11
05	2/4/2006	21	Ashe	A/H3	1
			Buncombe	A/H3	1
			Cabarrus	A/H3	2
			Forsyth	A/H3	5
			Guilford	A/H3	1
			Johnston	A/H1	1
			Orange	A/H3	3
			Tyrrell	A/H3	1
			Vance	A/H3	1
			Wake	A/H3	5
06	2/11/2006	19	Cabarrus	A/H3	2
			Durham	A/H3	1
			Forsyth	A/H3	1
			Guilford	A/H3	6
			Orange	A/H3	1
			Pitt	A/H3	1
			Rockingham	A/H3	1
			Vance	A/H3	1
			Wake	A/H3	1
			Watauga	A/H3	2
			Wilkes	A/H3	2
07	2/18/2006	29	Buncombe	A/H3	3
			Cabarrus	A/H3	2
			Forsyth	A/H3	2
			Guilford	A/H3	4
			Jackson	A/H3	4
			Lee	A/H3	1
			Orange	A/H3	1
			Pitt	A/H3	4
			Rockingham	A/H3	2
			Wake	A/H3	3
			Wilkes	A/H3	3
08	2/25/2006	19	Cabarrus	A/H3	2
			Caldwell	A/H3	1
			Cumberland	A/H3	2
			Granville	A/H3	1
			Guilford	A/H3	3
			Henderson	A/H3	1
			Jackson	A/H3	1
			Johnston	A/H3	1
			Pitt	A/H3	1
			Rockingham	A/H3	1
			Wake	A/H3	3
			Wilkes	A/H3	2
09	3/4/2006	25	Buncombe	A/H3	2
			Cabarrus	A/H3	1
			Cumberland	A/H3	1
			Forsyth	A/H3	1
			Guilford	A/H3	3
			Jackson	A/H3	2
			Mecklenburg	A/H3	1
			Pitt	A/H3	6
			Pitt	B	1
			Union	A/H3	2
			Wake	A/H3	2
			Watauga	A/H3	1
			Wilkes	A/H3	2
10	3/11/2006	11	Cumberland	A/H3	3
			Onslow	A/H3	1
			Pitt	A/H3	5
			Wake	B	1
			Watauga	A/H3	1
11	3/18/2006	07	Buncombe	A/H3	1
			Cabarrus	A/H3	1
			Durham	A/H3	1
			Guilford	B	1
			Pitt	A/H3	2
			Wilkes	A/H3	1
12	3/25/2006	06	Cumberland	A/H1	1
			Durham	A/H3	1
			Jones	A/H3	1
			Northhampton	A/H1	1
			Union	A/H3	1
			Wake	B	1
13	4/1/2006	04	Durham	A/H3	1
			Mitchell	B	1
			Northampton	A/H3	1
			Wake	B	1
14	4/8/2006	02	Onslow	A/H3	1
14	4/8/2006	02	Watauga	B	1
15	4/15/2006	00	N/A	N/A	0
16	4/22/2006	02	Cumberland	A/H3	1
16	4/22/2006	02	Wake	B	1
17	4/29/2006	01	Wake	B	1
18	5/6/2006	00	N/A	N/A	N/A
19	5/13/2006	00	N/A	N/A	N/A
20	5/20/2006	00	N/A	N/A	N/A
TOTAL ISOLATES IDENTIFIED TO DATE				A/H1	3
				A/H3	178
				B	9
				Total	190

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Page last updated on May 25, 2006