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HAN

Health Alert Network (HAN)

Providing Health Alerts, Health Advisories, Updates, and Info Service Messages to State and Local Health Officers, Public Information Officers, Epidemiologists and HAN Coordinators as well as Clinician organizations.


HAN Archive, Types, and Updates

HAN Coordinators and Jurisdictions

What is HAN?


The Health Alert Network (HAN) is a strong national program, providing vital health information and the infrastructure to support the dissemination of that information at the State and Local levels, and beyond. A vast majority of the State-based HAN programs have over 90% of their population covered under the umbrella of HAN.

HAN ensures that each community has:

  • rapid and timely access to emergent health information.
  • a group of highly-trained professional personnel.
  • evidence-based practices and procedures for effective public health preparedness, response, and service on a 24/7 basis.

The HAN Messaging System currently directly and indirectly transmits Health Alerts, Advisories, Updates, and Info Service Messages to over one million recipients.

HAN Message Types

  • Health Alert: Conveys the highest level of importance; warrants immediate action or attention.Example: HAN00001
  • Health Advisory: Provides important information for a specific incident or situation; may not require immediate action.Example: HAN00316
  • Health Update: Provides updated information regarding an incident or situation; unlikely to require immediate action.Example: HAN00309
  • Info Service: Provides general information that is not necessarily considered to be of an emergent nature.Example: HAN00319

Contact Us


For more information about the CDC HAN, please email the HAN Help Desk at hanhelp@cdc.gov.

Contact Us:
  • Centers for Disease Control and Prevention
    1600 Clifton Rd
    Atlanta, GA 30333
  • 800-CDC-INFO
    (800-232-4636)
    TTY: (888) 232-6348
    24 Hours/Every Day
  • cdcinfo@cdc.gov
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348, 24 Hours/Every Day - cdcinfo@cdc.gov

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