Weekly Influenza Report Week 19
[Pages:7]Weekly Influenza Report
Week 19
Report Date: Friday, May 17, 2019
The purpose of this report is to describe the spread and prevalence of influenza-like illness (ILI) in Indiana. It is meant to provide local health departments, hospital administrators, health professionals and residents with a general understanding of the burden of ILI. Data from several surveillance programs are analyzed to produce this report. Data are provisional and may change as additional information is received, reviewed and verified. For questions regarding the data presented in this report, please call the ISDH Surveillance and Investigation Division at 317-233-7125.
WEEKLY OVERVIEW
Influenza-like Illness - Week Ending May 11, 2019
ILI Geographic Distribution
Sporadic
ILI Activity Code
Minimal
Percent of ILI reported by sentinel outpatient providers
Percent of ILI reported by emergency department chief complaints
Percent positivity of influenza specimens tested at ISDH
1.43% 1% 78%
Number of influenza-associated deaths this season
113
Number of long-term care facility outbreaks this season
32
Number of school-wide outbreaks this season
8
SENTINEL SURVEILLANCE SYSTEM
Data are obtained from sentinel outpatient providers participating in the U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet). Data are reported on a weekly basis for the previous Morbidity and Mortality Weekly Report (MMWR) Week by the sentinel sites and are subject to change as sites backreport or update previously submitted weekly data.
Percent of ILI Reported by Type of Sentinel Outpatient Facility, Indiana, 2018-2019 Season
MMWR Week 19 18 17
All Reporters %ILI (n) 1.43% (20) 1.56% (23) 1.22% (23)
Universities %ILI (n) 0.95% (6) 1.36% (9) 1.3% (9)
Non-Universities %ILI (n) 1.59% (14) 1.68% (14) 1.16% (14)
Percent of ILI Reported by Age Category in Sentinel Outpatient Facilities, Indiana, 2018-2019 Season
Age Category, years 0-4 5-24
25-49 50-64 65+ Total
Total Number of ILI 18 25 6 3 3 55
Percent of ILI 32.7% 45.5% 10.9% 5.5% 5.5% 100%
SYNDROMIC SURVEILLANCE SYSTEM
Data are obtained from hospital emergency department chief complaint data through the Indiana Public Health Emergency Surveillance System (PHESS). Data are reported on a weekly basis for the previous Morbidity and Mortality Weekly Report (MMWR) Week and are subject to change as hospitals backreport or update previously submitted weekly data.
Percent of ILI Reported in Emergency Departments by District, Indiana, 2018-2019 Season
Indiana District 1 District 2 District 3 District 4 District 5 District 6 District 7 District 8 District 9 District 10
Previous MMWR Week 1.2 1.2 1.34 0.75 1.71 1.45 1.42 0.68 0.92 0.67 0.9
Current MMWR Week 1
1.03 1.58 0.56 1.27 1.18 1.15 0.42 1.07 0.8 0.5
INFLUENZA-ASSOCIATED MORTALITY
Data are obtained from the Indiana National Electronic Disease Surveillance System (I-NEDSS). Influenzaassociated deaths are reportable within 72 hours of knowledge; however, not all cases are reported in a timely manner so data in this report are subject to change as additional cases are back-reported.
Number of Influenza-Associated Deaths for All Ages*, Indiana, 2018-2019 Season
Age Category, years 0-4 5-24
25-49 50-64 65+ Total
Season Total 1 3 13 17 79 113
*Due to changes in the reporting rule as of 12/2015, influenza-associated deaths are reportable if either laboratory confirmed or listed as cause of death on death certificate. Therefore, case counts are not directly comparable to previous seasons in which influenza-associated deaths were only reportable by laboratory confirmation.
Counties with 5 Laboratory Confirmed Influenza-Associated Deaths for All Ages, 2018-2019 Season
County Bartholomew
Marion St. Joseph
Season Total 5 16 6
County Lake
Monroe -
Season Total 9 6 -
VIROLOGIC SURVEILLANCE
Circulating Influenza Viruses Detected by ISDH Laboratory*, Indiana, 2018-2019 Season
Week 19
Season Total
Percent of
Percent of
PCR Result
Number
Specimens
Number Specimens
Received
Received
2009 A/H1N1pdm virus
0
0%
289
34%
Influenza A/H3 seasonal virus
7
78%
289
34%
Influenza A/H1 seasonal virus
0
0%
0
0%
Influenza B Yamagata seasonal virus
0
0%
6
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