Communicable Diseases & Conditions

The Gallatin City-County Health Department’s Communicable Disease Program works to prevent, identify, and limit the spread of those diseases that can be passed from one person to another. Working together with area health care providers, our team investigates and tracks individual cases to prevent them from spreading further. We also aim to determine the source of an infection, identify contacts, and provide education to the general public.


What is a communicable disease?

A communicable disease is defined as an infectious disease that can be transmitted between persons and species through either direct or indirect transmission or other vectors (animals & insects.)



Some communicable diseases in our community include:



For more information on these and other communicable diseases, see


To see what has been reported this week, check out our weekly reports for Gallatin County.


Click to see the reportable communicable diseases in Montana 1995-2015.



Are you a health care provider needing to report a confirmed or suspect case of a communicable disease?  Please call 406-582-3100.

If you need to reach the Gallatin City-County Health Dept after hours to report an urgent public health matter, call the Gallatin County Sheriff’s office at 582-2100, ext. 2