Health Alert Network (HAN)
CDC’s Health Alert Network (HAN) is CDC’s primary method of sharing cleared information about urgent public health incidents with public information officers; federal, state, territorial, and local public health practitioners; clinicians; and public health laboratories.
CDC’s HAN collaborates with federal, state, territorial, and city/county partners to develop protocols and stakeholder relationships that will ensure a robust interoperable platform for the rapid distribution of public health information.
News from CDC’s Health Alert Network
- 0349-June 12, 2013
Nationwide Shortage of Doxycycline: Resources for Providers and Recommendations for Patient Care
- 0348-June 7, 2013
Notice to Health Care Providers: Updated Guidelines for Evaluation of Severe Respiratory Illness Associated with Middle East Respiratory Syndrome Coronavirus (MERS-CoV)
- 0347-June 7, 2013
Human Infections with Avian Influenza A (H7N9) Viruses
- 0346-April 17, 2013
Resources Available for Local and State Public Health Officials: Preparing for and Responding to Bombing Events
- 0345-April 12, 2013
Nationwide Shortage of Tuberculin Skin Test Antigens: CDC Recommendations for Patient Care and Public Health Practice
- 0344-April 5, 2013
Human Infections with Novel Influenza A (H7N9) Viruses
- 0343-March 8, 2013
Notice to Health Care Providers: Updated Guidelines for Evaluation of Severe Respiratory Illness Associated with a Novel Coronavirus
- 0342-March 4, 2013
Notice to Clinicians: Continued Vigilance Urged for Fungal Infections among Patients Who Received Contaminated Steroid Injections
- 0341-February 14, 2013
New Carbapenem-Resistant Enterobacteriaceae Warrant Additional Action by Healthcare Providers
- 0340-January 28, 2013
Recommendations for Drug Allocation, Tuberculosis Prevention, and Patient Care During Isoniazid Shortages
- 0339-January 16, 2013
Notice to Clinicians: Summary of CDC Recommendations for Influenza Antiviral Medications
CDC’s HAN is a strong national program, providing vital health information and the infrastructure to support dissemination at state and local levels, and beyond. The vast majority of the state-based HAN programs have over 90% of their populations covered under the umbrella of HAN. The HAN messaging system directly and indirectly transmits Health Alerts, Advisories, Updates, and Info Services to over one million recipients.
HAN Message Types
- Health Alert: provides vital, time-sensitive information for a specific incident or situation; warrants immediate action or attention by health officials, laboratorians, clinicians, and members of the public; and conveys the highest level of importance.Example: HAN00001
- Health Advisory: provides important information for a specific incident or situation; contains recommendations or actionable items to be performed by public health officials, laboratorians, and/or clinicians; may not require immediate action.Example: HAN00346
- Health Update: provides updated information regarding an incident or situation; unlikely to require immediate action.Example: HAN00342
- Info Service:
provides general public health information; unlikely to require immediate action.Example: HAN00345
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Links to non-Federal organizations are provided solely as a service to our users. Links do not constitute an endorsement of any organization by CDC or the Federal Government, and none should be inferred. The CDC is not responsible for the content of the individual organizations.
Page last updated June 12, 2013