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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 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.

2020 HAN Communications
October 7, 2020
 CDC Health Advisory:
Recent HIV Clusters and Outbreaks Across the United States Among People Who Inject Drugs and Considerations During the COVID-19 Pandemic
August 20, 2020
 CDPH Health Advisory:
Resurgence of Candida auris in Healthcare Facilities in the Setting of COVID-19
July 28, 2020
 LAC DPH Health Update: 
Discontinuing Isolation, Recently Recovered Patients, Universal Eye Protection
July 18, 2020
 LAC DPH Health Update:
Multisystem Inflammatory Syndrome in Children (MIS-C)
July 17, 2020
 LAC DPH Health Advisory:
Resurgence of Candida auris in Los Angeles County
July 13, 2020
 LAC DPH Health Advisory:
Heath Officer Order Requiring Diagnostic Testing Access
July 13, 2020
 LAC DPH Health Advisory:
Rifapentine Shortage and Detection of Nitrosamine Impurity
July 6, 2020
 CDC Health Advisory:
Serious Adverse Health Events Associated with Methanol-based Hand Sanitizers
July 4, 2020
 LAC DPH Health Advisory:
Increasing COVID-19 Cases; Isolation and Quarantine; Testing Access
June 23, 2020
 CDC Health Advisory:
Detection of Ciprofloxacin-resistant, ß-lactamase-producing Neisseria meningitidis Serogroup Y Isolates, United States, 2019–2020
June 2, 2020
 LAC DPH Health Update:
COVID-19 Updates
June 1, 2020
 LAC DPH Health Advisory:
Tuberculosis During the COVID-19 Pandemic
May 14, 2020
 CDC Health Advisory:
Multisystem Inflammatory Syndrome in Children (MIS-C) Associated with Coronavirus Disease 2019 (COVID-19)
May 12, 2020
 LAC DPH Health Alert:
Pediatric Multi-System Inflammatory Syndrome Potentially Associated with COVID-19
 Note: the case definition in this LAHAN is superseded by the 5/14/20 CDC HAN above.
May 11, 2020
 CDPH Health Alert:
E-cigarette, or Vaping, Product Use-Associated Lung Injury (EVALI) Cases During California’s COVID-19 Response
May 8, 2020
 LAC DPH Health Advisory:
Maintaining Immunizations During COVID-19 Pandemic and Resuming Deferred Preventive Care
May 1, 2020
 LAC DPH Health Advisory:
Revised Isolation Period and Clinical Symptoms
April 22, 2020
 LAC DPH Health Advisory:
Expanding Testing and Universal Source Control
April 16, 2020
 LAC DPH Health Advisory:
SARS-CoV-2 Serology
April 13, 2020
 CDPH All Facilities Letter:
Coronavirus Disease 2019 Optimizing the Use of Personal Protective Equipment (PPE)
April 7, 2020
 LAC DPH Health Advisory:
Notification of Close Contacts; Importance of COVID-19 Death and Case Reporting
April 2, 2020
 LAC DPH Health Update:
Revised COVID-19 Exposure Period
March 28, 2020
 LAC DPH Health Advisory:
Ambulatory Patients with COVID-19; Healthcare Personnel Monitoring
March 25, 2020
 LAC DPH Health Alert:
Preserving Critical Supplies and Resources; New COVID-19 Mortality Reporting
March 19, 2020
 LAC DPH Health Advisory:
COVID-19 Testing, Isolation and Quarantine, and Health Care Worker Monitoring Recommendations
March 13, 2020
 LAC DPH Health Information:
Webinar with CME. Clinical Update II on Coronavirus Disease 2019 3/13/20, 12pm Website  Flyer
March 11, 2020
 LAC DPH Health Advisory:
Coronavirus Disease-19 Testing Guidance and Revised Personal Protective Equipment
March 6, 2020
 LAC DPH Health Advisory:
COVID-19 Clinical Laboratory Testing, Reporting, Personal Protective Equipment (PPE), Health Care Worker Exposure Monitoring
March 4, 2020
 LAC DPH Health Advisory:
COVID-19 Guidance-Optimizing N95 Supplies and Managing Mild Illness
Februrary 29, 2020
 LAC DPH Health Advisory:
Revised Evaluation Criteria for Coronavirus Disease 2019 (COVID-19)
February 14, 2020
 LAC DPH Health Information:
Webinar with CME. Clinical Update on Coronavirus Disease 2019 2/21/20, 12pm Website  Flyer
February 7, 2020
 LAC DPH Health Alert:
Measles Outbreak in LA County
February 1, 2020
 CDC Health Update:
Update and Interim Guidance on Outbreak of 2019 Novel Coronavirus (2019-nCoV)
January 28, 2020
 LAC DPH Health Information:  View summary of LAC DPH briefing.
LAC DPH and CDC Telebriefings for Clinicians− 2019 Novel Coronavirus (2019-nCoV) on 1/30/20 and 1/31/20
January 26, 2020
 LAC DPH Health Advisory:
First Case of 2019 Novel Coronavirus (2019-nCoV) in Los Angeles County. Clinical Guidance.
January 17, 2020
 CDC Health Update:
Update and Interim Guidance on Outbreak of 2019 Novel Coronavirus (2019-nCoV) in Wuhan, China
January 10, 2020
 LAC DPH Health Advisory:
Rise in Disseminated Gonococcal Infections
January 10, 2020
 CDC Health Advisory:
Elevated Influenza Activity-Influenza B/Victoria and A(H1N1)pdm09 Viruses are the Predominant Viruses
January 8, 2020
 CDC Health Advisory:
Outbreak of Pneumonia of Unknown Etiology (PUE) in Wuhan, China
2019 HAN Communications
December 16, 2019
 CDC Health Advisory:
Guidance for Using Rapid Diagnostic Tests for Ebola in the United States
December 12, 2019
 LAC DPH Health Information:
Changes to Reportable Diseases and Conditions in LA County
November 21, 2019
 LAC DPH Health Alert:
Wound Botulism Cases Associated with Heroin
November 19, 2019
 CDPH Health Advisory:
Ongoing Risk of Highly Drug-Resistant Infections in Patients Following Hospitalization or Invasive Procedures in Tijuana, Mexico
November 7, 2019
 LAC DPH Health Advisory:
Mumps Outbreak in Men’s Central Jail
October 2, 2019
 CDPH Health Update:
Vaping-Associated Pulmonary Injury
August 30, 2019
 CDC Health Advisory:
Severe Pulmonary Disease Associated with Using E-Cigarette Products
August 28, 2019
 CDPH Health Update:
Vaping-Associated Pulmonary Injury
August 12, 2019
 CDPH Health Alert:
Severe Acute Pulmonary Disease Associated with Cannabis or Cannabidiol Oil Vaping
July 30, 2019
 LAC DPH Health Advisory:
Communicable Disease Recommendations Associated with the Hajj
July 23, 2019
 LAC DPH Health Alert:
Ebola Virus Disease Outbreak in the Democratic Republic of Congo
July 5, 2019
 CDPH Health Update:
Update and Recommendations - Shiga toxin-producing Escherichia coli (STEC) Infections Exposure at San Diego County Fair
July 2, 2019
 CDPH Health Notification:
Shiga toxin-producing Escherichia coli (STEC) Infections Exposure at San Diego County Fair
June 12, 2019
 CDC Health Advisory:
Nationwide Shortage of Tuberculin Skin Test Antigens - CDC Recommendations for Patient Care and Public Health Practice
May 24, 2019
 LAC DPH Health Update:
Measles Situation Update and Revised Clinical Guidance
May 7, 2019
 LAC DPH Health Advisory:
Candida auris Detected in Southern California Healthcare Facilities
April 26, 2019
 LAC DPH Health Update:
Measles Prevention in LA County
April 22, 2019
 LAC DPH Health Alert:
Measles Outbreak in LA County
April 3, 2019
 CDPH Health Advisory:
Measles Clinical Guidance: Identification and Testing of Suspect Measles Cases
February 21, 2019
 LAC DPH Health Advisory:
Hepatitis C Associated with Outpatient Clinic in Los Angeles
February 19, 2019
 LAC DPH Health Alert:
Increase in Clusters of Pertussis in 11 to 18-Year-Olds in LA County
February 15, 2019
 CDPH Health Advisory:
Ongoing Ebola Outbreak in the Democratic Republic of Congo – Screening for International Travel in Persons with Possible Infectious Disease Remains a Best Practice
January 23, 2019
 CDC Health Advisory:
Third Case of Rifampin/Penicillin-Resistant Strain of RB51 Brucella from Consuming Raw Milk
January 22, 2019
 LAC DPH Health Advisory:
Infections Associated with Unapproved Stem Cell Injections
January 14, 2019
 CDC Travel Alert:
Carbapenem-Resistant Pseudomonas Aeruginosa Infections Following Invasive Medical Procedures in Tijuana, Mexico
2013-18 HAN Communications
To see previously issued health alerts:
Please click here
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    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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