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Los Angeles Health Alert Network

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Contact Information
Los Angeles Health Alert Network
Email: lahan@ph.lacounty.gov
Public Health Monkeypox webpage for health care providers
Public Health COVID-19 webpage for health care providers
Health Professionals Web Portal
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.

For COVID-19 resources for health professionals in LA County, click here.

2023 HAN Communications
September 14, 2023
 LAC DPH Health Advisory
2023-2024 COVID-19 Vaccines PDF | Web/Mobile
September 9, 2023
 LAC DPH Health Advisory
Immunize Infants and Older Adults to Protect them from Severe RSV PDF | Web/Mobile
September 1, 2023
 CDC Health Advisory
Severe Vibrio vulnificus Infections in the United States Associated with Warming Coastal Waters PDF | Web/Mobile
August 29, 2023
 CDPH Health Advisory
Outbreak of Aeromonas Skin Infections Associated with an Adventure Race, Sonoma, California PDF | Web/Mobile
August 28, 2023
 CDC Health Update
Important Updates on Locally Acquired Malaria Cases Identified in Florida, Texas, and Maryland PDF | Web/Mobile
August 16, 2023
 CDPH Health Advisory
Listeria Associated with Soft Serve Ice Cream Distributed to Long-Term Care Facilities PDF | Web/Mobile
July 25, 2023
 CDPH Health Advisory
Global Epidemic Comes to California - Silicosis in Countertop Workers PDF | Web/Mobile
July 3, 2023
 LAC DPH Health Information
Certifying Deaths Due to COVID-19 PDF | Web/Mobile
June 26, 2023
 CDC Health Advisory
Locally Acquired Malaria Cases Identified in the United States PDF | Web/Mobile
June 22, 2023
 CDPH Health Update
Request to Submit Specimens from Patients Receiving Intensive Care for Influenza A to Public Health Laboratories PDF | Web/Mobile
June 21, 2023
 CDC Health Advisory
Guidance on Measles during the Summer Travel Season PDF | Web/Mobile
June 2, 2023
 CDPH Health Advisory
Bicillin® L-A (Benzathine Penicillin G) Shortage PDF | Web/Mobile
May 15, 2023
 CDC Health Update
Potential Risk for New Mpox Cases PDF | Web/Mobile
April 4, 2023
 CDC Health Advisory
Marburg Virus Disease Outbreaks in Equatorial Guinea and Tanzania PDF | Web/Mobile
April 4, 2023
 CDPH Health Advisory
Updates on Identification, Laboratory Testing, Management and Treatment, and Vaccination for Mpox Virus Infection in California PDF | Web/Mobile
March 29, 2023
 CDPH Health Advisory
Elevated Norovirus Activity in California PDF | Web/Mobile
March 3, 2023
 CDC Health Advisory
Measles Exposure at a Large Gathering in Kentucky, February 2023 and Global Measles Outbreaks PDF | Web/Mobile
March 2, 2023
 CDC Health Advisory
Increased Chikungunya Virus Activity in Paraguay and Associated Risk to Travelers PDF | Web/Mobile
February 24, 2023
 CDC Health Advisory
Increase in Extensively Drug-Resistant Shigellosis in the United States PDF | Web/Mobile
February 24, 2023
 LAC DPH Health Advisory
Xylazine in Illicit Drugs Increasing Overdose Risks PDF | Web/Mobile
February 2, 2023
 CDC Health Advisory
Outbreak of Extensively Drug-resistant Pseudomonas aeruginosa Associated with Artificial Tears PDF | Web/Mobile
2022 HAN Communications
December 23, 2022
 CDC Health Advisory
Increase in Pediatric Invasive Group A Streptococcal Infections PDF | Web/Mobile
December 21, 2022
 CDC Health Update
Important Updates on COVID-19 Therapeutics for Treatment and Prevention PDF | Web/Mobile
December 14, 2022
 CDPH Health Advisory
Evaluating and Managing Travelers Returning from Ebola Outbreak Areas with Infectious Disease Symptoms PDF | Web/Mobile
November 29, 2022
 CDPH Health Alert
Reminder to Prescribe COVID-19 Therapeutics to Mitigate Impact of Winter Respiratory Surge PDF | Note: CPDH revised and reissued the alert on 12/2/22 as Reminder to Lower Barriers to Prescribing COVID-19 Therapeutics to Mitigate Impact of COVID-19
November 18, 2022
 CDC Health Update
Update on Managing Monkeypox in Patients Receiving Therapeutics PDF | Web/Mobile
November 16, 2022
 LAC DPH Health Advisory
Increases of Flea-Borne Typhus PDF | Web/Mobile
November 10, 2022
 LAC DPH Health Update
Antiviral Treatment and Chemoprophylaxis for Influenza Infection During SARS-CoV-2 Co-Circulation PDF | Web/Mobile
November 7, 2022
 CDC Health Update
Update on Ebola Virus Disease (Sudan ebolavirus) Outbreak in Central Uganda PDF | Web/Mobile
November 4, 2022
 CDC Health Advisory
Increased Respiratory Virus Activity, Especially Among Children, Early in the 2022-2023 Fall and Winter PDF | Web/Mobile
October 31, 2022
 CDC Health Advisory
Outbreaks of Nontuberculous Mycobacteria Infections Highlight Importance of Maintaining and Monitoring Dental Waterlines PDF | Web/Mobile
October 20, 2022
 LAC DPH Health Update
Fall Influenza and COVID-19 Vaccination PDF | Web/Mobile
October 6, 2022
 CDC Health Advisory
Outbreak of Ebola virus disease (Sudan ebolavirus) in Central Uganda PDF | Web/Mobile
October 5, 2022
 CDPH Health Advisory
Guidance for Safe Specimen Collection From Monkeypox (MPX) Lesions: Reminder to NOT De-roof Lesions and NOT Use Sharps PDF | Web/Mobile
October 3, 2022
 CDPH Health Advisory
Early Respiratory Syncytial Virus Activity and Use of Palivizumab PDF | Web/Mobile
September 9, 2022
 CDC Health Advisory
Severe Respiratory Illnesses Associated with Rhinoviruses and/or Enteroviruses Including EV-D68 – Multistate, 2022 PDF | Web/Mobile
September 9, 2022
 LAC DPH Monkeypox Update
Severe Disease, Testing, and Vaccine Eligibility PDF | Web/Mobile
September 8, 2022
 LAC DPH COVID-19 Updates
New Booster Recommendations, Observation Period, Co-Administration PDF | Web/Mobile
August 30, 2022
 CDC Health Advisory
CDC Health Advisory: Variant Influenza Virus Infections: Recommendations for Identification, Treatment, and Prevention for Summer and Fall 2022 PDF | Web/Mobile
August 23, 2022
 LAC DPH Health Advisory
Recent Report of Polio Case in Rockland County, New York PDF | Web/Mobile
August 12, 2022
 LAC DPH Health Update
Monkeypox Updates Including Expedited Testing for PEH and Alternative JYNNEOS Dosing PDF | Web/Mobile
August 1, 2022
 CDC Health Update
Monkeypox in People with HIV, Children and Adolescents, and People who are Pregnant or Breastfeeding PDF | Web/Mobile
July 29, 2022
 CDC Health Update
Update for Clinicians on Testing and Treatment for Monkeypox PDF | Web/Mobile
July 27, 2022
 CDC Health Advisory
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 PDF | Web/Mobile
July 27, 2022
 LAC DPH COVID-19 Update
Therapeutics for SNFs, and Novavax PDF | Web/Mobile
July 21, 2022
 LAC DPH Health Update
Monkeypox Updates Including Provider Webinar Friday, July 22 PDF | Web/Mobile
July 14, 2022
 LAC DPH Monkeypox Update
Vaccine Referrals & Expanded Commercial Laboratories PDF | Web/Mobile
July 12, 2022
 CDC Health Advisory
Recent Reports of Human Parechovirus (PeV) in the United States—2022 PDF | Web/Mobile
July 11, 2022
 LAC DPH Information
Understanding CA Child Care and School Immunization Requirements and Medical Exemptions PDF | Web/Mobile
July 8, 2022
 LAC DPH Health Update
Monkeypox-Commercial Lab Testing, Reporting, & Vaccine Availability PDF | Web/Mobile
July 5, 2022
 LAC DPH Health Update
Vaccinating Children 6 Months of Age and Older PDF | Web/Mobile
June 24, 2022
 CDPH Health Advisory
Managing Monkeypox Virus Infection in California PDF | Web/Mobile
June 14, 2022
 CDC Health Update
Updated Case-finding Guidance: Monkeypox Outbreak-United States, 2022 PDF | Web/Mobile
June 7, 2022
 LAC DPH Health Update
Monkeypox Updates and Provider Webinar this Thursday, June 9, 2022 PDF | Web/Mobile
June 1, 2022
 LAC DPH Health Update
Isolation and Quarantine for General Public PDF | Web/Mobile
May 27, 2022
 LAC DPH Health Alert
Contaminated Ecstasy and Accidental Drug Overdoses PDF | Web/Mobile
May 27, 2022
 CDPH Health Advisory
Monkeypox Virus Infection in the United States and Other Non-endemic Countries PDF | Web/Mobile
May 26, 2022
 LAC DPH Health Advisory
Florida Meningococcal Outbreak in Gay, Bisexual, and Other MSM and Vaccine Recommendations for LAC PDF | Web/Mobile
May 24, 2022
 LAC DPH COVID-19 Vaccine Update
Vaccine Recommendations-Boosters and Staying Up to Date with Doses PDF | Web/Mobile
May 24, 2022
 CDC Health Advisory
COVID-19 Rebound After Paxlovid Treatment PDF | Web/Mobile
May 20, 2022
 CDC Health Advisory
Monkeypox Virus Infection in the United States and Other Non-endemic Countries PDF 
May 17, 2022
 CDPH Health Advisory
Seasonal Influenza Activity is Increasing in California PDF | Web/Mobile
May 16, 2022
 CDPH Health Advisory
CDPH Advises Parents and Caregivers Against Making or Feeding Homemade Infant Formula to Infants PDF
May 12, 2022
 CDC Health Update
Updated Recommendations for Adenovirus Testing and Reporting of Children with Acute Hepatitis of Unknown Etiology
May 5, 2022
 CDPH Health Update
Update on Test-to-Treat Programs in California PDF | Web/Mobile
April 29, 2022
 CDC Health Advisory
Highly Pathogenic Avian Influenza A(H5N1) Virus: Recommendations for Human Health Investigations and Response  PDF| Web/Mobile
April 26, 2022
CDC Health Advisory
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
April 21, 2022
CDC Health Advisory
Recommendations for Adenovirus Testing and Reporting of Children with Acute Hepatitis of Unknown Etiology
March 31, 2022
 CDPH Health Update
Use of Outpatient COVID-19 Therapeutics in California
March 18, 2022
 CDPH Health Update
Federal Test-to-Treat Program in California
March 2, 2022
 LAC DPH Health Advisory
Temporary National Shortage of Rifampin Oral Capsules
February 25, 2022
 LAC DPH Health Update
Revisions to Evusheld Dosing
February 17, 2022
 CDPH Health Update
Distribution and Patient Prioritization for Tixagevimab/Cilgavimab (Evusheld)
February 11, 2022
 CDPH State Health Officer Order
Revision of Mandatory Reporting of COVID-19 Results
February 09, 2022
 LAC DPH Health Advisory
Availability of Therapeutics for Treatment and Pre-exposure Prophylaxis of COVID-19
February 3, 2022
 CDPH Health Advisory
Omicron Variant Update: Therapeutics Changes for Outpatient Treatment of Mild to Moderate COVID-19
January 28, 2022
 LAC DPH Health Advisory
Addressing Low COVID-19 Vaccination Rates in Children 5-11 Years of Age
January 8, 2022
 CDPH AFL
Guidance on Quarantine and Isolation for Health Care Personnel (HCP) Exposed to SARS-CoV-2 and Return to Work for HCP with COVID-19
January 7, 2022
LAC DPH Health Alert
Surge in Emergency Response System and Emergency Departments
2013-21 HAN Communications
To see previously issued health alerts:
Please click here
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