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Health Alert Network (HAN)

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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.

Latest News from Health Alert Network

Health Alert Network (HAN) No. 409 –Seasonal Influenza A(H3N2) Activity and Antiviral Treatment of Patients with Influenza 12/27/2017 10:30 AM

Health Alert Network (HAN) No. 408 –Advice for Providers Treating Patients in or Recently Returned from Hurricane-Affected Areas, Including Puerto Rico and US Virgin Islands 10/24/2017 1:30 PM

Health Alert Network (HAN) No. 407 –Rifampin/Penicillin-Resistant Strain of RB51 Brucella Contracted from Consumption of Raw Milk 09/13/2017 12:30 PM

Health Alert Network (HAN) No. 406 –Hurricane Harvey—Clinical Guidance for Carbon Monoxide (CO) Poisoning 09/02/2017 9:30 PM

Health Alert Network (HAN) No. 405 –Increase in Reported cases of Cyclospora cayetanensis Infection, United States, Summer 2017 08/07/2017 2:00 PM

Health Alert Network (HAN) No. 404 –Patients Receiving Eculizumab (Soliris®) at High Risk for Invasive Meningococcal Disease Despite Vaccination 07/07/2017 11:00 AM

Health Alert Network (HAN) No. 403 –Potential for Falsely Low Blood Lead Test Results from LeadCare® Analyzers 05/17/2017 9:00 AM

Health Alert Network (HAN) No. 402 –Prolonged IgM Antibody Response in People Infected with Zika Virus: Implications for Interpreting Serologic Testing Results for Pregnant Women 05/05/2017 2:00 PM

Health Alert Network (HAN) No. 401 – CDC Recommendations for Diagnosing and Managing Shigella Strains with Possible Reduced Susceptibility to Ciprofloxacin 04/18/2017 4:00 PM

Health Alert Network (HAN) No. 400 –Investigation of Seoul Virus Outbreak Associated with Home-based, Rat-breeding Facilities in Wisconsin and Illinois 01/24/2017 2:00 PM


HAN Outreach

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.
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.
Health Update: provides updated information regarding an incident or situation; unlikely to require immediate action.
Info Service: provides general public health information; unlikely to require immediate action.

DISCLAIMER Use of trade names and commercial sources is for identification only and does not imply endorsement by the U.S. Department of Health and Human Services.

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.