Michigan Flu Focus Weekly Influenza Surveillance Report
November 13, 2020 Vol. 18; No. 06 Week Ending November 7, 2020 | WEEK 45 Editor: Sue Kim Editor email: [email protected]
Data provided in this report are preliminary and will be updated as additional data is received
Updates of Interest The Michigan Department of Health and Human Services have updated the Influenza Guidance documents for the 2020-2021 influenza season. These documents will Source: CDC FluView provide guidance on influenza surveillance, Note: This graph represents U.S. ILI activity levels reported to ILINet. Geographic spread of influenza has been reporting, and testing for Local Health suspended for the 2020-2021 influenza season Departments, Healthcare Providers, and Influenza-associated Pediatric Mortality Laboratories. Nationally, no (0) influenza-associated pediatric deaths have been reported Please visit www.michigan.gov/CDinfo for thus far for the 2020-2021 flu season. more information. 195 pediatric flu deaths were reported for the past 2019-2020 flu season.
Influenza-like Illness Outpatient Surveillance Week Ending Nov 7, 2020
U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet) Michigan participates in ILINet, a collaborative effort between the CDC, state and local health departments, and volunteer sentinel clinicians as part of Michigan’s influenza surveillance. ILINet provides data on the total number of outpatient visits to health care providers seen for any reason and the number of those patients with influenza-like illness (ILI). ILI is defined as fever (>100°F) and a cough and/or a sore throat without a known cause other than influenza. Number of Reports and ILI % by Region during this time period: Michigan Influenza Region C N SE SW Surveillance No. of Reporters (18) 5 3 8 2 Regions ILI % 0.2 1.8 0.6 0.3 Michigan Statewide ILINet and Syndromic Surveillance, 10.0 2020-2021 9.0 Michigan ILI Activity: 0.6% (Last week: 0.4%) 8.0 ILINet Regional Baseline*: 1.9% 7.0 Syndromic ILINet Baseline A total of 45 patient visits due to ILI were 6.0 Syndromic ILI Baseline reported out of 7,271 office visits for Week 45. 5.0
Rate *Regional baseline is determined by calculating the 4.0 mean percentage of patient visits due to ILI during non- 3.0 influenza weeks for the previous three seasons and adding two standard deviations 2.0 1.0 0.0 National Surveillance In the United States, 1.5% of outpatient visits were
due to ILI (Last week: 1.3%)
2-Jan-21 9-Jan-21
3-Oct-20
3-Apr-21
6-Feb-21
5-Dec-20
7-Nov-20
6-Mar-21
1-May-21 8-May-21
30-Jan-21 16-Jan-21 23-Jan-21
31-Oct-20 10-Oct-20 17-Oct-20 24-Oct-20
10-Apr-21 17-Apr-21 24-Apr-21
20-Feb-21 13-Feb-21 27-Feb-21
12-Dec-20 19-Dec-20 26-Dec-20
21-Nov-20 14-Nov-20 28-Nov-20
13-Mar-21 20-Mar-21 27-Mar-21 22-May-21 Week Ending 15-May-21 This is below the national baseline of 2.6%
Become an ILINET provider! Contact Shelly Doebler at [email protected]
Influenza-associated Hospitalization Surveillance Week Ending Nov 7, 2020
Influenza Hospitalization Surveillance Project (IHSP) Join the Influenza Sentinel The CDC’s Influenza Hospitalization Surveillance Network (FluSurv-NET) provides population- based rates of laboratory-confirmed influenza-associated hospitalizations from October 1st Hospital Network (ISHN)! through April 30th each year. Michigan participates as an IHSP state in FluSurv-NET for Clinton, What is it? ISHN is a group of hospitals in Michigan that Eaton, Genesee, Ingham, and Washtenaw Counties. voluntarily report weekly aggregate counts of influenza There were no influenza-associated hospitalizations reported to MDHHS for the IHSP during positive inpatients to assist st this time period. Since October 1 , 1 (0 pediatric, 1 adult) influenza-associated hospitalization MDHHS with statewide flu was reported in the catchment area for the 2020-2021 season. surveillance
How it works: As a participating Total IHSP Cases, 2015-2016 through 2020-2021 hospital in the ISHN, you would 160 complete a brief Survey Monkey every week containing: 140 • Number of hospitalizations with a positive influenza test 120 by age group during that time period 100 • The total number of hospitalizations due to any 80 condition during that time period (if available)
60 Number of Cases of Number The data you provide can assist 40 providers and public health in recognizing changes in the age or 20 geographic distribution of flu in this population. 0 40 41 42 43 44 45 46 47 48 49 50 51 52 53 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 If your facility is interested in MMWR Week participating or would like more 2015-16 2016-17 2017-18 2018-19 2019-20 2020-21 details, please contact Sue Kim Washtenaw County was added in the 2017-2018 season ([email protected]) Laboratory (Virologic) Surveillance Week Ending Nov 7, 2020
MDHHS BOL Virology Laboratory Data Michigan Sentinel Clinical Lab Network Respiratory Virus Data There were 0 new positive influenza results (0C, 0N, 0SE, 0SW) reported by the Eleven (11) sentinel clinical labs (3SE, 2SW, 5C, 1N) MDHHS Bureau of Laboratories (BOL) during this time period. reported for the week ending 11/7 # of Positive Respiratory Virus Results by Region SE Region Influenza A: no activity
C N SE SW Total Influenza B: no activity 0 0 0 0 0 H1N1 Parainfluenza: sporadic − low H3N2 0 0 0 0 0 RSV: low Infl B 0 0 0 0 0 Adenovirus: sporadic – slightly elevated Total 0 0 0 0 0 hMPV: no activity Central Region Influenza Positive Test Results, 2020-2021 Influenza A: sporadic 115 110 Influenza B: sporadic 105 Flu A, no subtype 100 Parainfluenza: no activity 95 Flu A, H1N1 RSV: sporadic 90 85 Flu A, H3 Adenovirus: low 80 Flu B, no lineage hMPV: no activity 75 70 Flu B, Yamagata 65 SW Region 60 Flu B, Victoria Influenza A: no activity 55 50 Influenza B: no activity 45 Parainfluenza: no activity 40 35 RSV: no activity 30 Number of Positive Specimens Positive of Number 25 Adenovirus: no activity 20 hMPV: no activity 15 10 North Region 5 0 Influenza A: no activity Influenza B: no activity
Parainfluenza: no activity
2-Jan-21 9-Jan-21
3-Oct-20
3-Apr-21
6-Feb-21
5-Dec-20
7-Nov-20
6-Mar-21
1-May-21 8-May-21
23-Jan-21 16-Jan-21 30-Jan-21
17-Oct-20 24-Oct-20 10-Oct-20 31-Oct-20
24-Apr-21 10-Apr-21 17-Apr-21
13-Feb-21 20-Feb-21 27-Feb-21
12-Dec-20 19-Dec-20 26-Dec-20
21-Nov-20 28-Nov-20
14-Nov-20 RSV: no activity
13-Mar-21 20-Mar-21 27-Mar-21
15-May-21 22-May-21 Week Ending Adenovirus: no activity Note: Based on Specimen Collection Date Flu B lineage data will be reported based on MDHHS BOL testing runs and will be backtracked into this graph hMPV: no activity
Congregate Setting Outbreaks Week Ending Nov 7, 2020
There were 0 new respiratory outbreaks (0C, 0N, 0SE, 0SW) reported to MDHHS during this time period. Respiratory outbreaks for the 2020-2021 season are listed in the table below. # of Congregate Setting Outbreaks by Region Facility Type C N SE SW Total Did you know? Schools: K-12 & College 0 0 0 0 0 Congregate setting outbreaks of Long-term Care / viral respiratory illnesses are 0 0 0 0 0 Assisted Living Facility required to be reported to your Healthcare Facility 0 0 0 0 0 local health department? See: Daycare 0 0 0 0 0 • Influenza Guidance for Homeless Shelter 0 0 0 0 0 Healthcare Providers Correctional Facility 0 0 0 0 0 • Guideline for influenza and Other 0 0 0 0 0 Respiratory Virus Outbreaks in Total 0 0 0 0 0 Long-Term Care Facilities
Note: Outbreaks associated with COVID-19 are not reported in this table (above) or graph (below). Congregate Setting Outbreaks by Region, 2020-2021
14 C 12 N SE 10 SW
8
6 # Outbrekas #
4
2
0
Week Ending
Flu Bytes Week Ending Nov 7, 2020
Influenza Vaccine Updates Influenza News Blast Influenza Burden Estimates The MDHHS- Division of Immunization has developed a flu dashboard • NEW STUDY: Flu-like Illness and Risk to communicate timely influenza immunization and ILINet data. of Acute Cardiovascular Events The Centers for Disease Control and • 2019-2020 Flu Vaccination Coverage Prevention (CDC) have released MDHHS and the State of Michigan have set a goal to increase the • NEW STUDY: 2018-19 Flu VE in preliminary burden estimates for number of people vaccinated in Michigan by 33% or more than 4.4 Children the 2019-2020 flu season. million total doses administered for the 2020-2021 flu season. • Global Flu Update- WHO Between October 1, 2019 through Interactive tables include: • 2020 NFID Influenza News - Doses administered and percent to goal (picture below) Conference April 4, 2020 it is estimated that - Doses by county, vaccine type, age group • Hospitalized COVID-19 Patients there have been: - Seasonal vaccination coverage Compared to Hospitalized Flu • 39 million – 56 million flu - Cases by season and by flu region Patients • NEW STUDY: Improving Influenza illnesses Find the dashboard and more at www.michigan.gov/flu. For any Vaccination in Children with Asthma • 18 million – 26 million flu questions please contact Shelly Doebler at [email protected]. medical visits Additional Resources • 410,000 – 740,000 flu • MDHHS Influenza Webpage hospitalizations • MDHHS Bureau of Laboratories (BOL) • 24,000 – 62,000 flu deaths Webpage and Test Request Forms • CDC FluView Weekly Report NOTE: The week of April 4 was the • CDC Healthcare Professionals Flu last week in-season influenza burden Toolkit estimates will be provided for the • Immunization Action Coalition: Ask 2019-2020 season. the Experts- Flu 2020-2021 preliminary burden • MDHHS- Influenza Vaccine F.A.Q. estimates are expected to be View Michigan Flu Focus Report archives released later in the flu season. here.
MDHHS Contributors Bureau of Infectious Disease Prevention Bureau of Laboratories S. Bidol, MPH, M. Doebler, MPH, S. Kim, MPH B. Robeson, MT, V. Vavricka, MS To be added to the distribution list, please contact Sue Kim at [email protected]
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