Los Angeles Health Alert Network

Contact Information
Los Angeles Health Alert Network
Email: lahan@ph.lacounty.gov
Los Angeles Health Alert Network
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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.

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.
2025 HAN Communications
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
CDC Health Advisory
PDF | Web/Mobile

2024 HAN Communications
December 6, 2024
Evaluation and Testing for Human Avian Influenza A(H5N1) Infection
CDPH Health Update (Revised 12.16.24) 
PDF | Web/Mobile

November 22, 2024
Mycoplasma pneumoniae Infections Among Children and Adolescents During Fall and Winter Respiratory Illness Season
CDPH Health Advisory  
PDF | Web/Mobile

Month ##, 2024
First Case of Clade I Mpox Diagnosed in the United States
CDC Health Advisory  
PDF | Web/Mobile

October 16, 2024
Updated Syphilis Screening Recommendations
CDPH Health Update  
PDF | Web/Mobile

October 11, 2024
California Statewide Discontinuation of Ciprofloxacin for Invasive Meningococcal Disease Post-Exposure Prophylaxis
CDPH Health Advisory  
PDF | Web/Mobile

October 10, 2024
First Cases of Human Avian Influenza A (H5N1) in California & Preparation for the Respiratory Virus Season
CDPH Health Advisory  
PDF | Web/Mobile

October 3, 2024
First Marburg Virus Disease Outbreak in the Republic of Rwanda
CDC Health Advisory  
PDF | Web/Mobile

September 24, 2024
Mpox Clade I & II – Prevention in the US and Before Travel
CDC/LAC DPH Health Update  
PDF | Web/Mobile

September 18, 2024
Cluster of Locally Acquired Cases of Dengue in Los Angeles County
LAC DPH Health Update  
PDF | Web/Mobile

September 17, 2024
Human Infections with Baylisascaris procyonis (Raccoon Roundworm)
LAC DPH Health Alert  
PDF | Web/Mobile

September 09, 2024
Locally Acquired Case of Dengue in Los Angeles County
LAC DPH Health Alert  
PDF | Web/Mobile

September 4, 2024
Detection of Highly Pathogenic Avian Influenza (HPAI) A(H5N1) in California Dairy Cattle
CDPH Health Advisory  
PDF | Web/Mobile

August 16, 2024
Increased Oropouche Virus Activity and Associated Risk to Travelers
CDC Health Advisory  
PDF | Web/Mobile

August 13, 2024
Increase in Human Parvovirus B19 Activity in the United States
CDC Health Advisory  
PDF | Web/Mobile

August 09, 2024
Rise in Extensively Drug-Resistant Shigella Strains-January to May 2024
CDPH Health Advisory  
PDF | Web/Mobile

August 07, 2024
Mpox Caused by Human-to-Human Transmission of Monkeypox Virus in the Democratic Republic of the Congo with Spread to Neighboring Countries
CDC Health Update  
PDF | Web/Mobile

June 03, 2024
Webinar with CME. Dengue on 7/11/24, 12pm
LAC DPH Health Information  
Flyer | Web/Mobile

June 26, 2024
Increased Risk of Dengue Virus Infections in the United States
CDC Health Advisory  
PDF | Web/Mobile

June 25, 2024
Severe Acute Illnesses and Hospitalizations Linked to Diamond Shruumz ™ Chocolate Bars, Cones, and Gummies (Microdose Products)
CDPH Health Advisory  
PDF | Web/Mobile

June 20, 2024
Reports of Rare, Severe Dermatophyte Infections Associated with Sexual Contact in the United States
CDPH Health Advisory  
PDF | Web/Mobile

June 13, 2024
Disrupted Access to Prescription Stimulant Medications Could Increase Risk of Injury and Overdose
CDC Health Advisory  
PDF | Web/Mobile
 
June 12, 2024
Influenza A Testing Guidance: Enhanced Surveillance During the Summer Months
CDPH Health Update  
PDF | Web/Mobile
Note for laboratories: Please see LAC DPH Laboratory Alert Notification--Enhanced Influenza Surveillance (6-13-24).

June 12, 2024
Severe Illness Potentially Associated with Consuming Diamond Shruumz™ Brand Chocolate Bars, Cones, and Gummies
CDC Health Advisory  
PDF | Web/Mobile

May 21, 2024
Meningococcal Disease—Ciprofloxacin Resistance in Southern California and Cases Linked to Travel to the Kingdom of Saudi Arabia
LAC DPH Health Advisory  
PDF | Web/Mobile

May 10, 2024
Local Outbreak of Hepatitis A among Persons Experiencing Homelessness and/or who use Illicit Drugs
LAC DPH Alert  
PDF | Web/Mobile

April 23, 2024
Adverse Effects Linked to Counterfeit or Mishandled Botulinum Toxin Injections
CDC Health Advisory  
PDF | Web/Mobile

March 18, 2024
Fatality from Lead Poisoning Linked to Use of Hemorrhoid Ointment from Vietnam
CDPH Health Advisory  
PDF | Web/Mobile

April 05, 2024
Highly Pathogenic Avian Influenza A(H5N1) Virus: Identification of Human Infection and Recommendations for Investigations and Response
CDC Health Advisory  
PDF | Web/Mobile

March 28, 2024
Increase in Invasive Serogroup Y Meningococcal Disease in the United States
CDC Health Advisory  
PDF | Web/Mobile

March 18, 2024
Extension of Long-Acting Benzathine Penicillin G (Bicillin® L-A) Shortage
CDPH Health Advisory  
PDF | Web/Mobile

March 18, 2024
Increase in Global and Domestic Measles Cases and Outbreaks: Ensure Children in the United States and Those Traveling Internationally 6 Months and Older are Current on MMR Vaccination
CDC Health Advisory  
PDF | Web/Mobile

February 1, 2024
First LA County Measles Case
LAC DPH Health Alert  
PDF | Web/Mobile

January 19, 2024
Substantial Rise in Coccidioidomycosis in California: Recommendations for Healthcare Providers
CDPH Health Advisory
PDF | Web/Mobile

2013-23 HAN Communications
To see previously issued health alerts:
Please click here
 
Public Health has made reasonable efforts to provide accurate translation. However, no computerized translation is perfect and is not intended to replace traditional translation methods. If questions arise concerning the accuracy of the information, please refer to the English edition of the website, which is the official version.
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