MDH FluWatch
Welcome to the influenza surveillance reporting website, brought to you by the Division of Infectious Disease Surveillance in the Center for Surveillance, Infection Prevention, and Outbreak Response at the Maryland Department of Health (MDH).
CURRENT WEEK INFLUENZA ACTIVITY SUMMARY
During the week ending November 10, 2018 (MMWR Week 45), influenza-like illness (ILI) intensity was MINIMAL and there was REGIONAL geographic activity of influenza.
(Reports are updated by close-of-business on Fridays unless otherwise noted.)
INFLUENZA SURVEILLANCE INDICATORS
ILI INTENSITY:
One indicator we look at is the proportion of visits to sentinel providers for ILI. Intensity is measured against a baseline proportion of visits on a scale of minimal, low, moderate, and high.
|
Week Ending |
Intensity Level |
| November 10, 2018 |
Minimal |
| November 3, 2018 |
Minimal |
| October 27, 2018 |
Minimal |
| October 20, 2018 |
Minimal |
| October 13, 2018 |
Minimal |
| October 06, 2018 |
Minimal |
GEOGRAPHIC ACTIVITY:
A second indicator we look at is the geographic spread of influenza activity. By looking at where sentinel providers are reporting ILI, where influenza and ILI outbreaks are occurring, and from where specimens are being submitted for testing, we can tell whether influenza is not active, sporadic, local, regional, or widespread. This is not an indicator of disease severity, only of where the disease is located in Maryland.
|
Week Ending |
Activity Level |
| November 10, 2018 |
Regional |
| November 3, 2018 |
Regional |
| October 27, 2018 |
Sporadic |
| October 20, 2018 |
Sporadic |
| October 13, 2018 |
Sporadic |
| October 6, 2018 |
Sporadic |
PREDOMINANT INFLUENZA STRAIN:
A third indicator we look at is the predominant strain of influenza circulating in Maryland. This is important because different strains have different implications for the community. For example, a 'novel' or 'variant' strain will not have a vaccine available. There are also some strains of influenza that have developed resistance to antiviral medication. And there are some strains that will not match the strains in the seasonal flu vaccine. Knowing what is circulating is important in planning and responding to influenza outbreaks. Refer to the weekly report for a full breakdown of the PCR test results reported.
|
Week Ending |
Predominant Strain |
| November 10, 2018 |
Type A (H1) |
| November 3, 2018 |
Type A (H3) |
| October 27, 2018 |
Type A (H1) |
| October 20, 2018 |
Type B (Victoria) |
| October 13, 2018 |
Type B (Victoria) |
| October 6, 2018 |
Type A (H1) / Type B (Victoria) |
PREVIOUS WEEKLY REPORTS
|
Week Ending |
File |
| October 27, 2018 |
PDF
|
| October 20, 2018 |
PDF |
| October 13, 2018 |
PDF |
| October 6, 2018 |
PDF |
| May 19, 2018 |
PDF |
| May 12, 2018 |
PDF |
| May 5, 2018 |
PDF |
| April 28, 2018 |
PDF |
| April 21, 2018 |
PDF |
| April 14, 2018 |
PDF |
| April 7, 2018 |
PDF |
| March 31, 2018 |
PDF |
| March 24, 2018 |
PDF |
| March 17, 2018 |
PDF |
| March 10, 2018 |
PDF |
| March 3, 2018 |
PDF |
| February 24, 2018 |
PDF |
| February 17, 2018 |
PDF |
| February 10, 2018 |
PDF |
| February 3, 2018 |
PDF |
| January 27, 2018 |
PDF |
| January 20, 2018 |
PDF |
| January 13, 2018 |
PDF |
| January 6, 2018 |
PDF |
| December 30, 2017 |
PDF |
| December 23, 2017 |
PDF |
| December 16, 2017 |
PDF |
| December 9, 2017 |
PDF |
| December 2, 2017 |
PDF |
| November 25, 2017 |
PDF |
| November 18, 2017 |
No Report (Holiday) |
| November 11, 2017 |
PDF |
| November 4, 2017 |
PDF |
| October 28, 2017 |
PDF |
| October 21, 2017 |
PDF |
| October 14, 2017 |
PDF |
| October 7, 2017 |
PDF |
PREVIOUS SEASON SUMMARIES
|
Season |
File |
| 2017-2018 |
PDF |
| 2016-2017 |
PDF
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2015-2016 |
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2014-2015 |
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2013-2014 |
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2012-2013 |
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2011-2012 |
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2010-2011 |
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