North Carolina Influenza Sentinel Surveillance Program

North Carolina Influenza Update

Final Weekly Statistical Report for 2007-2008 Flu Season

May 21, 2008

I. Influenza-Like Illnesses Reported by N.C. Sentinel Sites
Week Number	Ending	Number ILI	Patient Visits	Percent ILI
40	10/6/2007	96	21,610	0.44%
41	10/13/2007	107	22,201	0.48%
42	10/20/2007	133	22,462	0.59%
43	10/27/2007	132	22,968	0.57%
44	11/3/2007	135	23,388	0.57%
45	11/10/2007	243	25,762	0.94%
46	11/17/2007	247	23,124	1.06%
47	11/24/2007	219	17,363	1.26%
48	12/1/2007	120	24,690	0.48%
49	12/8/2007	160	20,135	0.79%
50	12/15/2007	199	23,933	0.83%
51	12/22/2007	171	17,841	0.95%
52	12/29/2007	89	7,724	1.15%
01	1/5/2008	155	14,113	1.09%
02	1/12/2008	216	22,663	0.95%
03	1/19/2008	401	22,272	1.80%
04	1/26/2008	638	20,813	3.06%
05	2/2/2008	1177	25,816	4.55%
06	2/9/2008	1320	26,397	5.00%
07	2/16/2008	1254	24,867	5.04%
08	2/23/2008	1394	25,191	5.53%
09	3/1/2008	1048	25,376	4.12%
10	3/8/2008	610	21,394	2.85%
11	3/15/2008	391	20,987	1.86%
12	3/22/2008	235	19,378	1.21%
13	3/29/2008	103	17,199	0.59%
14	4/05/2008	121	17,928	0.67%
15	4/12/2008	83	17,079	0.48%
16	4/19/2008	47	17,010	0.27%
17	4/26/2008	38	15,817	0.24%
18	5/3/2008	30	13,364	0.22%
19	5/10/2008	02	9,763	0.02%
20	5/17/2008	10	6,832	0.14%

Percentage of Visits for Influenza-like Illness
Reported by Sentinel Providers
North Carolina, 2007-2008(Red Line)
With Comparative 2006-2007(Blue Line)
With Comparative 2005-2006 Data(Yellow Line)
and Comparative 2004-2005 Data(Light Blue Line) Graph illustrating the percentage of visits for ILI

Influenza-Like Illness Surveillance in North Carolina, 2007-2008
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: 78 volunteer practitioners report weekly their patient workload; using ILI case definition:
"fever and cough or sore throat."
ED: As of 5/17/2008, 110 hospitals report daily ED visits electronically through the NC DETECT System, using ILI case definition: "ILI cases must include any case with the term "flu" or "influenza" or have at least one fever term and one influenza-related symptom."

II. Influenza Virus Isolates Identified
by the State Laboratory of Public Health
During the 2007-2008 Influenza Season
Week Number	Ending	Total Confirmed	County	Virus Type	No. Isolates of Same Virus
40	10/6/2007	00	N/A	N/A	0
41	10/13/2007	01	Buncombe	A/H3	1
42	10/20/2007	00	N/A	N/A	0
43	10/27/2007	00	N/A	N/A	0
44	11/03/2007	00	N/A	N/A	0
45	11/10/2007	00	N/A	N/A	0
46	11/17/2007	00	N/A	N/A	0
47	11/24/2007	00	N/A	N/A	0
48	12/1/2007	03	Granville	B	1
			Guilford	A/H3	1
			Orange	A/H3	1
49	12/8/2007	00	N/A	N/A	0
50	12/15/2007	00	N/A	N/A	0
51	12/22/2007	03	Nash	A/H3	2
51	12/22/2007	03	Nash	A/H3	1
52	12/29/2007	01	Wake	A/H1	1
01	1/5/2008	02	Orange	A/H1	2
02	1/12/2008	03	Wake	A/H1	1
			Wilkes	A/H1	1
			Caldwell	A/H3	1
03	1/19/2008	13	Cabarrus	B	1
			Durham	A/H3	3
			Guilford	A/H3	2
			Orange	A/H3	4
			Wake	A/H1	2
			Wake	A/H3	1
04	1/26/2008	23	Buncombe	A/H3	3
			Cabarrus	A/H3	1
			Cumberland	A/H3	1
			Durham	A/H1	1
			Forsyth	A/H3	4
			Guilford	A/H1	1
			Guilford	A/H3	2
			Lee	A/H1	1
			Mecklenburg	A/H1	1
			Mecklenburg	A/H3	1
			Pitt	A/H1	3
			Pitt	A/H3	1
			Wake	A/H1	1
			Wake	A/H3	1
			Watauga	A/H3	1
05	2/2/2008	88	Beaufort	A/H1	1
			Beaufort	A/H3	2
			Buncombe	A/H3	3
			Cumberland	A/H3	2
			Durham	A/H3	3
			Durham	B	1
			Guilford	A/H1	1
			Guilford	A/H3	13
			Jackson	A/H1	1
			Jackson	A/H3	1
			Mecklenburg	A/H3	1
			Orange	A/H3	3
			Pender	A/H3	1
			Pitt	A	1
			Pitt	A/H1	1
			Pitt	A/H3	16
			Robeson	A/H1	1
			Robeson	A/H3	3
			Wake	A/H1	4
			Wake	A/H3	16
			Wake	B	1
			Watauga	A/H3	12
06	2/9/2008	98	Buncombe	A/H1	2
			Buncombe	A/H3	12
			Buncombe	B	1
			Cabarrus	A/H3	1
			Cabarrus	B	1
			Caldwell	A/H1	1
			Caldwell	A/H3	2
			Cumberland	A/H3	13
			Durham	A/H3	6
			Forsyth	A/H3	2
			Guilford	A/H3	2
			Hertford	A/H1	1
			Mecklenburg	A/H3	3
			Mitchell	A/H3	1
			Orange	A/H3	2
			Orange	B	1
			Pasquotank	A/H1	1
			Pender	A/H3	2
			Pitt	A/H1	2
			Pitt	A/H3	10
			Richmond	A/H3	1
			Union	A/H1	2
			Union	A/H3	3
			Wake	A/H1	3
			Wake	A/H3	16
			Watauga	A/H3	4
			Wayne	A/H3	2
			Wilkes	A/H3	1
07	2/16/2008	102	Beaufort	A	2
			Bertie	A/H1	1
			Bertie	A/H3	1
			Buncombe	A	2
			Buncombe	A/H1	1
			Buncombe	A/H3	10
			Cabarrus	A	1
			Cabarrus	A/H3	3
			Caldwell	A	2
			Caldwell	A/H3	1
			Cumberland	A	1
			Cumberland	A/H3	13
			Durham	A	14
			Durham	A/H1	1
			Durham	A/H3	6
			Granville	A/H3	1
			Greene	A/H3	2
			Guilford	A	3
			Guilford	A/H1	2
			Guilford	A/H3	7
			Lee	A/H3	1
			Mecklenburg	A/H1	1
			Mecklenburg	A/H3	10
			Mecklenburg	B	2
			Pender	A	3
			Pitt	A	1
			Pitt	A/H3	2
			Robeson	A	2
			Rockingham	A	2
			Union	A	1
			Union	A/H3	1
			Union	B	1
			Watauga	A/H3	1
08	2/23/2008	79	Buncombe	A	3
			Buncombe	A/H3	4
			Cabarrus	A	1
			Cabarrus	A/H3	7
			Cabarrus	B	1
			Caldwell	A	1
			Caldwell	A/H3	2
			Catawba	A	1
			Cumberland	A/H3	14
			Dare	A	4
			Dare	A/H3	2
			Durham	A	10
			Durham	A/H3	4
			Forsyth	A/H3	1
			Guilford	A	6
			Guilford	A/H3	1
			Lee	A/H3	2
			Onslow	A/H3	1
			Orange	A	1
			Orange	A/H1	1
			Pasquotank	A	1
			Pender	A	1
			Richmond	A/H3	1
			Union	A	1
			Watauga	A	1
			Watauga	A/H3	4
			Wayne	A	1
			Wayne	A/H3	1
			Yancey	A	1
09	3/1/2008	49	Buncombe	A	3
			Buncombe	A/H1	1
			Buncombe	A/H3	7
			Buncombe	B	2
			Cabarrus	A	2
			Cabarrus	A/H3	1
			Caldwell	A	2
			Cumberland	A/H3	8
			Dare	A	1
			Dare	A/H3	1
			Durham	A/H3	1
			Durham	B	1
			Guilford	A	1
			Guilford	A/H1	1
			Guilford	A/H3	5
			Lee	A	1
			Pender	A	1
			Pender	A/H3	4
			Richmond	A/H3	1
			Watauga	A	1
			Wayne	A	2
			Wayne	A/H3	2
10	3/8/2008	21	Beaufort	A	3
			Beaufort	A/H1	1
			Beaufort	A/H3	1
			Cabarrus	A/H1	1
			Cabarrus	A/H3	1
			Caldwell	A	1
			Durham	A/H3	2
			Guilford	A	1
			Guilford	A/H3	1
			Hertford	A/H3	1
			Lee	A	1
			Lee	A/H3	1
			Lee	B	1
			Pender	A/H3	2
			Rowan	A	1
			Rowan	B	1
			Yancey	A/H3	1
11	3/15/2008	17	Cumberland	A/H3	8
			Cumberland	B	1
			Durham	B	1
			Guilford	A/H1	1
			Guilford	B	1
			Onslow	A/H3	1
			Pender	A/H3	1
			Rockingham	A/H3	1
			Rowan	A/H3	1
			Watauga	B	1
12	3/22/2008	07	Cabarrus	B	1
			Catawba	B	1
			Forsyth	A/H3	1
			Guilford	A/H3	1
			Guilford	B	1
			Onslow	B	1
			Rowan	A/H3	1
13	3/29/2008	10	Cumberland	A/H3	3
			Onslow	B	1
			Pender	A/H3	1
			Pender	B	4
			Rockingham	A/H3	1
14	4/5/2008	00	N/A	N/A	N/A
15	4/12/2008	04	Cumberland	B	1
			Onslow	B	1
			Pender	B	1
			Rowan	B	1
16	4/19/2008	00	N/A	N/A	N/A
17	4/26/2008	00	N/A	N/A	N/A
18	5/3/2008	00	N/A	N/A	N/A
19	5/10/2008	00	N/A	N/A	N/A
20	5/17/2008	None Received	N/A	N/A	N/A
TOTAL ISOLATES IDENTIFIED TO DATE				A	92
				A/H1	48
				A/H3	356
				B	34
				Total	530

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