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The Department of Health and Mental Hygiene

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Fluwatch : homepage


Welcome to the new on-line version of the Maryland Resident Influenza Tracking Survey (MRITS). MRITS is a system designed to measure influenza-like illness (ILI) in Maryland based on illness reported directly by residents each week. While most influenza surveillance systems rely heavily on information submitted by health care providers, MRITS allows those who might not contact their provider to offer complementary information to estimate the level of flu activity in the State.


Survey Access

Sign Up

If you have not signed up to participate in MRITS, please take a few moments to do so by Registering to Participate.

Log In

If you have already signed up to participate, please click here to Log In. You will need to know the e-mail address you used to sign up and your month and year of birth. 

(This site is best viewed at a screen resolution of 1024 by 768 pixels).

Survey News


The Maryland Resident Influenza Tracking Survey has its own Facebook page. If you have a Facebook account, you can be a fan of MRITS by Clicking Here.


The 2011-2012 influenza season begins on October 3, 2011, this year. Please visit our influenza surveillance and epidemiology page at to read the latest news on influenza activity.





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