Los Angeles Health Alert Network

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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.

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

2021 HAN Communications
October 14, 2021
LAC DPH Health Advisory
Foul Odors Reported in the Vicinity of the Dominguez Channel in Carson and Surrounding Communities
October 14, 2021
CDC Health Update
Expansion of Recall of LeadCare Blood Lead Tests Due to Risk of Falsely Low Results
September 29, 2021
CDC Health Advisory
COVID-19 Vaccination for Pregnant People to Prevent Serious Illness, Deaths, and Adverse Pregnancy Outcomes from COVID-19
September 27, 2021
CDPH Health Advisory
Influenza and Respiratory Syncytial Virus Activity and Guidance for Clinicians
September 20, 2021
CDC Health Advisory
Guidance for Clinicians Caring for Individuals Recently Evacuated from Afghanistan
September 14, 2021
CDC Health Advisory
Increases in Availability of Cannabis Products Containing Delta-8 THC and Reported Cases of Adverse Events
September 10, 2021
LAC DPH COVID-19 Update
COVID-19 Vaccine Additional Dose vs Booster and Vaccine Coadministration
August 26, 2021
CDC Health Advisory
Rapid Increase in Ivermectin Prescriptions and Reports of Severe Illness Associated with Use of Products Containing Ivermectin to Prevent or Treat COVID-19
August 14, 2021
LAC DPH COVID-19 Vaccine Update
Additional mRNA Dose for Immunocompromised Persons & LA County Healthcare Worker Vaccine Mandate
August 10, 2021
LAC DPH Health Advisory:
Increased Interseasonal Activity of Respiratory Syncytial Virus in Los Angeles County
August 09, 2021
CDC Health Update:
New Case Identified: Multistate Investigation of Non-travel Associated Burkholderia pseudomallei Infections (Melioidosis) in Four Patients: Georgia, Kansas, Minnesota, and Texas — 2021
August 06, 2021
CDPH State Public Health Officer Order:
Health Care Worker Vaccine Requirement (8-5-21)
July 28, 2021
CDPH State Public Health Officer Order:
Unvaccinated Workers in High Risk Settings (7-26-21)
July 27, 2021
CDC Health Advisory
Vaccination to Prevent COVID-19 Outbreaks with Current and Emergent Variants — United States, 2021
July 17, 2021
CDC Health Advisory
Potential Exposure to Person with Confirmed Human Monkeypox Infection — United States, 2021
July 6, 2021
CDC Health Advisory
Recall of LeadCare® Blood Lead Tests Due to Risk of Falsely Low Results
June 30, 2021
CDC Health Advisory
Multistate Investigation of Non-travel Associated Burkholderia pseudomallei Infections (Melioidosis) in Three Patients: Kansas, Texas, and Minnesota—2021
June 10, 2021
CDC Health Advisory
Increased Interseasonal Respiratory Syncytial Virus (RSV) Activity in Parts of the Southern United States
June 1, 2021
LAC DPH COVID-19 Updates
SARS-CoV-2 Testing Guidelines and More
May 28, 2021
CDPH Health Advisory:
Myocarditis and Pericarditis after Receipt of mRNA COVID-19 Vaccines Among Adolescents and Young Adults
May 28, 2021
CDPH Health Advisory:
Bamlanivimab plus Etesevimab No Longer Recommended for Use in California for COVID-19
May 26, 2021
CDPH Disease Notification:
Acute Non-Viral Hepatitis of Unknown Etiology Potentially Associated with an Alkaline Water Product
May 13, 2021
LAC DPH COVID-19 Vaccine Update:
Vaccination for Children and Homebound Persons
April 23, 2021
CDC/FDA Update:
Use of J&J to Resume in LA County
April 13, 2021
CDC Health Alert:
CDC/FDA Recommend that Providers Pause Administration of Johnson & Johnson COVID-19 Vaccine
March 31, 2021
CDC Health Advisory:
Acute Non-Viral Hepatitis of Unknown Etiology Potentially Associated with an Alkaline Water Product
March 26, 2021
LAC DPH Health Update:
School and Childcare Immunizations and Filing Medical Exemptions
March 19, 2021
CDPH Health Alert:
Concerns re: the Use of Bamlanivimab Monotherapy in the Setting of SARS-CoV-2 Variants
March 15, 2021
LAC DPH COVID-19 Update:
Vaccination for People at Higher Risk and Revised Recommendations for the Fully Vaccinated
March 5, 2021
LAC DPH Health Alert:
Ebola Virus Disease Outbreaks in the Democratic Republic of Congo and Guinea
March 3, 2021
LAC DPH Health Alert:
Wound Botulism Cases Associated with Heroin Injection
February 26, 2021
CDPH Health Alert:
SARS-CoV-2 virus variants of concern identified in CA
February 22, 2021
CDPH Information:
Increasing Disseminated Gonococcal Infections in California – Resources including a webinar on 2/23/21
February 18, 2021
LAC DPH COVID-19 Update:
Vaccinated Persons and Quarantine
February 16, 2021
CDPH Health Advisory:
Ongoing Risk of Highly Drug-Resistant Infections in Patients Following Hospitalization or Invasive Procedures in Mexico
February 12, 2021
CDC Health Advisory:
Extensively Drug-Resistant Salmonella Typhi Infections Among U.S. Residents Without International Travel
February 3, 2021
LAC DPH Advisory:
Limitations of SARS-CoV-2 Antigen Tests, Low Influenza Rates, Updates
January 21, 2021
CDPH Vaccine Update:
Providers that Paused Use of Moderna Lot 041L20A COVID-19 Vaccine Can Immediately Resume Administering Doses
January 19, 2021
LAC DPH COVID-19 Information:
Individuals Age 65 and Older and Vaccine MegaPOD Reminder
January 17, 2021
CDPH Recommendation:
That Providers Pause Administration of Moderna's COVID-19 Vaccine Lot 041L20A
January 15, 2021
LAC DPH COVID-19 Information:
Large Scale Vaccination Events for Phase 1A Healthcare Workers- Vaccination and Volunteer Opportunities
2020 HAN Communications
December 24, 2020
LAC DPH Health Advisory:
SARS-CoV-2 Virus Variant
December 23, 2020
LAC DPH Health Alert:
Extreme Surge on Hospitals and 9-1-1 System
December 21, 2020
LAC DPH COVID-19 Update:
Revised Quarantine Period and Resources
October 7, 2020
CDC Health Advisory:
Increase in Fatal Drug Overdoses Across the United States Driven by Synthetic Opioids Before and During the COVID-19 Pandemic
December 4, 2020
LAC DPH Health Advisory:
COVID-19 Vaccine Update
November 24, 2020
CDPH Health Update:
Maximizing Routine Immunization During the COVID-19 Pandemic
October 29, 2020
LAC DPH Health Alert:
Wound Botulism Cases Associated with Heroin
October 28, 2020
LAC DPH COVID-19 Update:
Revised Isolation & Quarantine Orders, Recently Recovered Patients, MIS-C, and Resources
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
2013-19 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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