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, tribal, and local public health practitioners; clinicians; and public health laboratories.

CDC’s HAN collaborates with federal, state, territorial, tribal, 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.

CDC’s HAN is a strong national program that provides vital health information and the infrastructure to support dissemination at state and local levels. The majority of the state-based HAN programs have more than 90% of their populations covered under the HAN umbrella. The HAN messaging system directly and indirectly transmits Health Alerts, Advisories, Updates, and Info Services to more than one million recipients.

Latest News from Health Alert Network

Health Alert Network (HAN) No. 474 – Severe Respiratory Illnesses Associated with Rhinoviruses and/or Enteroviruses Including EV-D68 – Multistate, 2022
09/09/2022 1:15 PM


Health Alert Network (HAN) No. 473 – Variant Influenza Virus Infections: Recommendations for Identification, Treatment, and Prevention for Summer and Fall 2022
08/30/2022 3:00 PM


Health Alert Network (HAN) No. 472 – Update for Clinicians on Monkeypox in People with HIV, Children and Adolescents, and People who are Pregnant or Breastfeeding
07/30/2022 1:15 PM


Health Alert Network (HAN) No. 471 – Update for Clinicians on Testing and Treatment for Monkeypox
07/28/2022 9:00 PM


Health Alert Network (HAN) No. 470 – Melioidosis Locally Endemic in Areas of the Mississippi Gulf Coast after Burkholderia pseudomallei Isolated in Soil and Water and Linked to Two Cases – Mississippi, 2020 and 2022
07/27/2022 3:30 PM


Health Alert Network (HAN) No. 469 – Recent Reports of Human Parechovirus (PeV) in the United States—2022
07/12/2022 1:15 PM


Health Alert Network (HAN) No. 468 – Updated Case-finding Guidance: Monkeypox Outbreak—United States, 2022
06/14/2022 5:00 PM


Health Alert Network (HAN) No. 467 – COVID-19 Rebound After Paxlovid Treatment
05/24/2022 9:00 AM


Health Alert Network (HAN) No. 466 – Monkeypox Virus Infection in the United States and Other Non-endemic Countries—2022
05/20/2022 11:30 AM


Health Alert Network (HAN) No. 465 – Updated Recommendations for Adenovirus Testing and Reporting of Children with Acute Hepatitis of Unknown Etiology
05/11/2022 12:15 PM


Health Alert Network (HAN) No. 464 – Highly Pathogenic Avian Influenza A(H5N1) Virus: Recommendations for Human Health Investigations and Response
04/29/2022 8:00 PM


Health Alert Network (HAN) No. 463 -Updated Information on Availability and Use of Treatments for Outpatients with Mild to Moderate COVID-19 Who are at Increased Risk for Severe Outcomes of COVID-19
04/25/2022 1:00 PM


Health Alert Network (HAN) No. 462 – Recommendations for Adenovirus Testing and Reporting of Children with Acute Hepatitis of Unknown Etiology
04/21/2022 11:00 AM

Latest News from Health Alert Network

Health Alert Network (HAN) No. 427 – Update and Interim Guidance on Outbreak of 2019 Novel Coronavirus (2019-nCoV)
02/01/2020 9:00 AM

Health Alert Network (HAN) No. 426 – Update and Interim Guidance on Outbreak of 2019 Novel Coronavirus (2019-nCoV) in Wuhan, China
01/17/2020 8:30 PM

Health Alert Network (HAN) No. 425 – Elevated Influenza Activity: Influenza B/Victoria and A(H1N1)pdm09 Viruses are the Predominant Viruses
01/10/2020 11:40 AM

Health Alert Network (HAN) No. 424 – Outbreak of Pneumonia of Unknown Etiology (PUE) in Wuhan, China
01/08/2020 4:15 PM

Health Alert Network (HAN) No. 423 – Guidance for Using Rapid Diagnostic Tests for Ebola in the United States
12/16/2019 2:00 PM

Health Alert Network (HAN) No. 422 – Hot Tub Displays and Legionella Risk—Guidance for Environmental and Public Health Practitioners
11/15/2019 2:30 PM

Health Alert Network (HAN) No. 421 – Severe Pulmonary Disease Associated with Using E-Cigarette Products
8/30/2019 9:35 AM

Health Alert Network (HAN) No. 420 – Nationwide Shortage of Tuberculin Skin Test Antigens: CDC Recommendations for Patient Care and Public Health Practice
6/6/2019 11:30 AM

Health Alert Network (HAN) No. 419 – Influenza Season Continues with an Increase in Influenza A(H3N2) Activity 3/28/2019 2:15 PM

Health Alert Network (HAN) No. 418 – Update: Widespread Outbreaks of Hepatitis A among People Who Use Drugs and People Experiencing Homelessness across the United States 3/25/2019 1:30 PM

Health Alert Network (HAN) No. 417 – Third Case of Rifampin/Penicillin-Resistant Strain of RB51 Brucella from Consuming Raw Milk 1/23/2019 2:30 PM

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Page last reviewed: March 7, 2022