Los Angeles Health Alert Network

The Department of Public Health (DPH) emails priority communications to health care professionals through LAHAN. Topics include local or national disease outbreaks and emerging health risks. To receive LAHAN communications, click the ‘subscribe’ button. It takes less than a minute to sign up. DPH will not share your contact information.

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LAHAN Communication Types

Red Box Alert:
Conveys the highest level of importance; warrants immediate action or attention.
Orange Box Advisory:
Provides important information for a specific incident or situation; may not require immediate action.
Yellow Box Update:
Provides updated information regarding an incident or situation; unlikely to require immediate action.
Blue Box Information:
Provides general information that is not necessarily considered to be of an emergent nature.

2026 HAN Communications

January 5, 2026
Influenza Update: Vaccinate, Test, and Administer Influenza Antivirals
CDPH Health Advisory  
PDF | Web/Mobile

2025 HAN Communications

December 3, 2025
First Reported Outbreak Caused by Marburg Virus in Ethiopia
CDC Health Advisory  
PDF | Web/Mobile

NOvember 18, 2025
Silicosis Cases in Countertop Workers Continue to Rise, as Silicosis Becomes a Reportable Disease in California
CDPH Health Advisory  
PDF | Web/Mobile

November 12, 2025
Outbreak of Infant Botulism Linked to ByHeart Infant Formula
CDPH Health Advisory  
PDF | Web/Mobile

October 17, 2025
Community Spread of Clade I Mpox Within California
CDPH Health Advisory  
PDF | Web/Mobile

October 15, 2025
Locally Acquired Case of Dengue in Los Angeles County
LAC DPH Health Advisory  
PDF | Web/Mobile

October 2, 2025
Updates to Fall 2025 Respiratory Virus Vaccine Recommendations in California
LAC DPH Health Advisory  
PDF | Web/Mobile

September 18, 2025
Ebola Outbreak in the Democratic Republic of the Congo
CDC Health Advisory  
PDF | Web/Mobile

September 12, 2025
Fatal Overdoses Associated with 7-Hydroxymitragynine (7-OH) in Los Angeles County
LAC DPH Health Alert  
PDF | Web/Mobile

September 05, 2025
New World Screwworm Outbreak in Mexico and Central America
CDPH Health Advisory  
PDF | Web/Mobile

August 28, 2025
Increases of Flea-Borne Typhus
LAC DPH Health Advisory  
PDF | Web/Mobile

June 13, 2025
Influenza A Subtype Testing Guidance: Continued Surveillance During the Summer Months
CDPH Health Advisory  
PDF | Web/Mobile

June 5, 2025
Increase in Extensively Drug-Resistant Shigella Cases in LAC
LAC DPH Health Advisory  
PDF | Web/Mobile

May 5, 2025
Public Health Declares Communitywide Outbreak of Hepatitis A in Los Angeles County
LAC DPH Health Alert  
PDF | Web/Mobile

April 3, 2025
Suspect Measles? Isolate, Report to Local Public Health and Test
CDPH Health Advisory  
PDF | Web/Mobile

March 18, 2025
Ongoing Risk of Dengue Virus Infections and Updated Testing Recommendations in the United States
CDC Health Update  
PDF | Web/Mobile

March 7, 2025
Expanding Measles Outbreak in Texas and New Mexico and Guidance for the Upcoming Travel Season
CDC Health Advisory  
PDF | Web/Mobile

March 03, 2025
Increase in Domestic Measles Cases
LAC DPH Health Advisory  
PDF | Web/Mobile

February 27, 2025
Pediatric Influenza-Associated Encephalopathy and Encephalitis, including Acute Necrotizing Encephalopathy
LAC DPH Health Advisory  
PDF | Web/Mobile

February 6, 2025
Ebola Outbreak Caused by Sudan virus in Uganda
CDC Health Advisory  
PDF | Web/Mobile

January 17, 2025
Accelerated Subtyping of Influenza A in Hospitalized Patients
CDC/LAC DPH Health Advisory
PDF | Web/Mobile

January 13, 2025
Wildfire Response and Resources
LAC DPH Health Advisory
PDF | Web/Mobile

2013-24 HAN Communications

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