Influenza Surveillance |


Past Influenza Surveillance Reports


Current Influenza Surveillance

Percentage of Visits for Influenza-like Illness (ILI) Reported by ILINet Sites, Kansas, October 2017-September 2018 and the Previous Two Surveillance Periods*

Percentage of Visits for Influenza-like Illness (ILI) Reported by ILINet Sites

*ILINet sites may vary in number and type (student health, family practice, etc.) each season. Data from the previous two surveillance years are plotted according to week number corresponding to the 2017-2018 week ending date; for example, week 40 ended October 7, 2017, week 40 of 2016 ended October 8, 2016, and week 40 of 2015 ended October 10, 2015.

19 of 34 (56%) data by the reporting deadline for the current week.**

**ILINet sites monitor outpatient visits and may be more likely to report data if patients are presenting with influenza-like illness. The information on this chart may change over time, as ILINet sites may adjust their data submissions, and additional submissions may be received after Tuesday's deadline.


About Influenza Surveillance in Kansas

Kansas regulations do not require health care providers to notify KDHE when a patient is diagnosed with influenza. Instead, influenza activity is measured through the U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet), a collaboration between the Centers for Disease Control and Prevention (CDC) and state, local, and territorial health departments. ILINet in Kansas is represented by family practices, emergency departments, student health centers, and pediatric offices.

Each week, ILINet clinics determine the percentage of patients seen with influenza-like illness (ILI). Influenza-like illness is defined as fever (=100°F) with cough and/or sore throat, in the absence of a known cause other than influenza. Data is collected from Sunday through Saturday of each week. Clinics are asked to submit the previous week's data by noon each Tuesday.

The information reflects data collected for the week ending the previous Saturday. The above chart shows the percentage of ILI visits reported by week. The percentage was calculated by dividing the number of patients seen with ILI at the clinics by the total number of patients seen and multiplying by 100.

Syndromic Surveillance

The Electronic Surveillance System for the Early Notification of Community-Based Epidemics (ESSENCE) is a syndromic surveillance system for capturing and analyzing public health indicators in near-real-time for detection of disease outbreaks. As of 10/11/2017, 88 Kansas emergency departments are submitting data accessible through ESSENCE, accounting for 82% of the emergency room visits statewide. Data collection was supported by the Grant or Cooperative Agreement Number 1 U50 OE000069-01, funded by the Centers for Disease Control and Prevention. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the Centers for Disease Control and Prevention or the Department of Health and Human Services.

Percentage of Visits for ILI reported to the Electronic Surveillance System for Early Notification of Community-Based Epidemics (ESSENCE), October 2017 – September 2018 and the Previous Surveillance Period

Electronic Surveillance System for Early Notification of Community-Based Epidemics (ESSENCE)

 
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About Influenza Testing in Kansas

The Kansas Health and Environmental Laboratories (KHEL) provided confirmatory testing for ILINet site patients with ILI, as well as for hospitalized patients throughout the state. Real-Time Polymerase Chain Reaction (RT-PCR) tests were used to analyze nasal and nasopharyngeal swabs for the presence of influenza virus.


Influenza Specimens Tested at KHEL

 

About Respiratory Virus Testing in Kansas

In addition to influenza testing by PCR, the Kansas Health and Environmental Laboratories (KHEL) also tests all negative influenza specimens and select outbreak specimens via a respiratory viral panel (RVP). These specimens are tested with the Biofire® RVP, which can probe for the following 17 viral targets:

  • Adenovirus
  • Coronavirus HKU1
  • Coronavirus NL63
  • Coronavirus 229E
  • Coronavirus OC43
  • Human Metapneumovirus
  • Influenza A
  • Influenza A/H1
  • Influenza A/H1-2009
  • Influenza A/H3
  • Influenza B
  • Parainfluenza 1
  • Parainfluenza 2
  • Parainfluenza 3
  • Parainfluenza 4
  • Rhinovirus/Enterovirus
  • Respiratory Syncytial Virus
Respiratory Viral Panel Specimens Chart

Via Christi Hospital in Wichita, KS shares their respiratory viral panel results with KDHE monthly. The most recent results are listed in the following table.

Via Christi Respiratory Viral Panel Results (excluding all influenza)
  October November December
Adenovirus 3 2 7
Coronavirus 1 4 23
Human Metapneumovirus 1 15 29
Parainfluenza 13 31 26
Rhinovirus/Enterovirus 54 64 66
Respiratory Syncytial Virus 1 4 11
Negative 215 271 365

Please visit Children’s Mercy Hospital’s website to find RVP results from the Kansas City metro area.


Percent of Deaths Associated with Pneumonia and Influenza by Surveillance Period

Percent of Deaths Associated with Pneumonia and Influenza by Surveillance Period, Kansas, October 2017 – September 2018 and Previous Two Surveillance Periods*

Influenza Specimens Tested by KHEL


(1B) Kansas Resident Pneumonia & Influenza Related Deaths by Selected Entire Flu Seasons
by Causal Relationship, Current Season is only Season to Date
Time Period based on Date of Death

  Season
2015-16 Season 2016-17 Season 2017-18 Season
N Percent N Percent N Percent
Influenza - Contributing Cause of Death Only 5 0.4 25 1.6 43 4.3
Influenza - Direct Cause of Death 19 1.4 100 6.3 100 10.1
Pneumonia - Direct Cause of Death 414 29.5 372 23.4 197 19.9
Pneumonia - Contributing Cause of Death Only 966 68.8 1092 68.7 652 65.7
Total 1404 100.0 1589 100.0 992 100.0

Source: Kansas Department of Health and Environment - Division of Health
Bureau of Epidemiology and Public Health Informatics
Prepared February 19, 2018
Note: Influenza reporting seasons run from September 1 through May 31 of following year
Influenza and Pneumonia frequently occur together during a flu season resulting in reporting of both on death certificates.


National Influenza Surveillance


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