Maryland Immunization Information System (ImmuNet)

Please note that ImmuNet will be down the following dates/times (in EDT):

    • Thursday, 01/09/2025 - ImmuNet is currently experiencing technical issues. The vendor is investigating and working to resolve the issue as soon as possible. We apologize for the inconvenience, and will send out another email when ImmuNet is back up. You may contact ImmuNet Support​ with any questions. Thank you for your patience.

    • Monthly maintenance every 2nd Saturday of the month from 5:30 pm to 9:30 pm.
Please plan your work accordingly for these downtimes.​

When ImmuNet is back up each time, be sure to clear your cache and refresh the page (go to your browser history to clear your browsing history - CTL-SHIFT-DEL in Chrome) before you sign in at mdimmunet.org​.

Thank You!​