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Indiana Health Alert Network (IHAN)


The Indiana Health Alert Network (IHAN-IN) is a mass notification system intended to distribute health alerts to healthcare providers and public health professionals across the state of Indiana.



Registering is as simple as logging on to the web site and entering the information requested. Select “Register Now” button on the home page to begin the registration process. You should have information about your current employer and contact information available in order to complete the registration process. The ISDH will verify individuals registering for different organizations within the system. New users may only join organizations that are applicable to their profession.

IHAN Registration Guide


Health alert messages fall into the following categories:

Health Alert
Conveys the highest level of importance and warrants immediate action or attention.

Health Advisory
Provides important information for a specific incident or situation and may not require immediate action or attention.

Health Update
Provides updated information regarding an incident or situation and is unlikely to require immediate action.

Health Information
Provides general health information which is not considered to be of an emergent nature.