Influenza Surveillance Report 2014 – 2015 Season

Summit County Public Health
Influenza Surveillance Report
2014 – 2015 Season
Report #4
Centers for Disease Control and Prevention Week 45 (11/02 – 11/08)
Summit County
Influenza surveillance began October 05, 2014 in Summit County.
Overall, influenza hospitalizations and lab testing have increased but the number of ED visits has slightly decreased. The influenza
trend is still currently below or has remained the same as previous years according to the Week of the year.
During the third week of surveillance, reporting Summit County labs performed 69 (Wk 45) tests for influenza and there
were no positive test results for influenza A but 2 positive influenza B tests.
Summit County hospital admissions, related to influenza had 1 hospitalization at Akron Children’s hospital (Summit County
and Non-Summit County residents). Admissions during Wk 45, compared to Wk 44, were represented by the following age
groups:
Wk
44
Wk
45
0-1yr (0)
1-9yrs (0)
10-18yrs (0)
19-44yrs (0)
0-1yr (0)
1-9yrs (1)
10-18yrs (0)
19-44yrs (0)
45-64yrs
(0)
45-64yrs
(0)
65yrs> (0)
65yrs> (0)
Weekly
Total= 0
Weekly
Total=0
Season
Total=2
Season
Total= 3
Of reporting Community Based Care Providers (CBCP), 27 reports of influenza-like illness (ILI) were received for Wk 45,
which is a decrease from week 44 which had 31 reports.
10 cases of ILI were reported by Extended Care Facilities (ETC) in Wk 45.
One report of ILI by Primary Care Providers (PCP) was received in Wk 45.
During Wk 45, 4 Amantidine antiviral prescriptions were prescribed and 1 Oseltamivir (Tamiflu).
According to EpiCenter, constitutional complaints accounted for 7.7% of Emergency Department visits compared to 7.3% in
Wk 44. Fever and ILI remained the same as Wk 44 with 1.2% of Emergency Department visits for the week. ILI is defined as
fever (temperature of 100 degrees or greater), cough, and/or sore throat.
No deaths in Summit County were related to influenza in Wk 45. There was a decrease in the amount of pneumonia related
deaths this week. 12 deaths were related to pneumonia in Wk 45 compared to 10 in Wk 44.
Graphs with Summit County influenza trends can be found on pages 2 and 3.
Summit County Public Health (SCPH), November 15, 2014
Ohio
Influenza activity during Wk 45 was sporadic again indicating small numbers of laboratory-confirmed influenza cases or a
single laboratory-confirmed influenza outbreak has been reported but there is no increase in cases of ILI.
Sentinel providers across Ohio Regions reported the following influenza-associated hospitalizations:
CDC
Week
44
45
Central
East
Northeast Northwest Southeast Southwest
West
Weekly Season
Central*
Central
Total
Total
1
3
0
1
0
0
1
6
56
4
5
3
3
0
0
0
15
71
*Summit County is in the East Central Region.
Statewide, 8.4% of Emergency Department (ED) visits were for constitutional illness symptoms in Wk 45 compared to 8.5%
in Wk 44. This is a slight decrease.
ED visits for fever and ILI remained the same compared with Wk 44 with 1.9% of Emergency Department (ED) visit for the
week.
As of November 08, 2014 the Ohio Department of Health (ODH) lab has reported 1 A/PdH1N1 and 4 A/h3N2
As of November 08, 2014, no pediatric influenza-related deaths have been reported during the 2013-14 influenza season.
Ohio Department of Health (ODH), November 08, 2014
2014/2015 Summit County Influenza Trends
850
825
800
775
750
725
700
675
650
625
600
575
550
525
500
475
450
425
400
375
350
325
300
275
250
225
200
175
150
125
100
75
50
25
0
5-Oct
ILI
Lab test ordered
Lab test positive A
Lab test positive B
antivirals ordered
influenza deaths
pneumonia deaths
influenza hospitalizations
5-Nov
5-Dec
5-Jan
5-Feb
5-Mar
5-Apr
2014/2015 Summit County School Absenteeism
4000
3500
3000
2500
2000
School absenteeism
1500
1000
500
0
5-Oct
5-Nov
5-Dec
5-Jan
5-Feb
5-Mar
5-Apr
Nation
Influenza activity was low in the United States (US) during Wk 45.
Three states reported regional influenza activity; Puerto Rico, the U.S Virgin Islands and 13 states reported local activity;
the District of Columbia and 31 states reported sporadic activity; three states reported no influenza activity.
Outpatient visits for Influenza-like Illness (ILI) accounted for 1.6% of total visits in Wk 45. During Wk 44 ILI counted for 1.5%,
both were still below the national baseline of 2.0%.
There was a 1.4% increase in the number of specimens tested for Wk 45 compared to WK 44 as shown below.
During Wk 45, 9,138 specimens were tested; 678(7.4%) were positive.
 567 (83.6. %) – Influenza A
2 – 2009 H1N1
192 – H3
373 – Subtyping not performed
 111 (16.4%) – Influenza B
During Wk 44, 8,439 specimens were tested; 504 (6.0%) were positive.
 394 (78.2 %) – Influenza A
1 (0.2%) – 2009 H1N1
120 (30.5%) – H3
273 (69.3%) – Subtyping not performed
 110 (21.8%) – Influenza B
In the United States, all recently circulating influenza viruses have been susceptible to the neuraminidase inhibitor antiviral
medications, Oseltamivir and Zanamivir; however, rare sporadic instances of Oseltamivir-resistant 2009 H1N1 and A (H3N2)
viruses have been detected worldwide
During week 45, 6.0% of all deaths reported through the 122 Cities Mortality Reporting System were due to Pneumonia &
Influenza. This is below the epidemic threshold of 6.3% for week 45.
No influenza-associated pediatric deaths were reported in Wk 45. One influenza-associated pediatric death has been
reported during the 2014-2015 season.
2014-15 season totals for influenza-associated pediatric deaths = 1.
2013-14 season totals for influenza-associated pediatric deaths = 109.
Centers for Disease Control and Prevention (CDC), November 14, 2014
Global
th
st
Note: this data is for Week 43 to 44, October 19 - November 1
Influenza activity In North America has slightly increased but still remains low.
Influenza activity in Europe has remained at inter-seasonal levels.
In tropical countries of the Americas, influenza detections decreased with respiratory syncytial virus (RSV) causing most
influenza-like illness (ILI) and severe acute respiratory infections (SARI).
In Africa, eastern and, western Asia, influenza activity was low.
In tropical Asia, influenza activity continued to decrease or remained low with influenza B predominant in India and Viet
Nam.
In the southern hemisphere, influenza activity reached inter-seasonal levels except in several Pacific Islands where ILI
activity remained high.
Based on FluNet reporting (as of 14 November 2014, 13:40 UTC), during weeks 43 to 44 (19 October 2014 to 1 November
2014), National Influenza Centres (NICs) and other national influenza laboratories from 51 countries, areas or territories
reported data. The WHO GISRS laboratories tested more than 44 937 specimens. 1978 were positive for influenza viruses,
of which 1434 (72.5%) were typed as influenza A and 544 (27.5%) as influenza B. Of the sub-typed influenza A viruses, 60
(6.9%) were influenza A (H1N1) pdm09 and 813 (93.1%) were influenza A (H3N2). Of the characterized B viruses, 87 (96.7%)
belonged to the B-Yamagata lineage and 3 (3.3%) to the B-Victoria lineage.
World Health Organization (WHO), November 03, 2014
2014 – 2015 Summit County Influenza Surveillance Participants:
The Summit County Influenza Surveillance Program collects data from a variety of community sources to compare
influenza activity locally to illness trends across Ohio, the nation, and the world. Sentinel providers across Summit County
submit various data types based on their specific discipline, such as:
Number of influenza-like illness diagnoses made by Primary Care Providers (PCP), Extended Care Facilities (ECF),
and Community-Based Care Facilities (CBCF)
Absentee data from local schools
Number of influenza lab tests ordered as well as numbers of positive influenza test results
Number of antiviral prescriptions ordered
Number of influenza and pneumonia deaths reported to CDC
Number of confirmed influenza-associated hospitalizations reported
ED visit chief complaint data for illness possibly related to influenza reported by syndromic surveillance system
(EpiCenter)
Reporting from participants may not be complete each week. Numbers may change as updated reports are received.
For questions, please contact Chenai Milton in the Communicable Disease Unit at 330-812-3992. Report was issued on
November 17, 2014.