CAHAN San Diego Alerts
California Health Alert Network (CAHAN) San Diego Communications (Alerts, Advisories, Updates, and Information)—2021-2025
The County of San Diego Health and Human Services Agency (HHSA) Public Health Services (PHS) Division sends priority health communications to health care and public safety professionals in San Diego County through the California Health Alert Network (CAHAN) San Diego. Topics include communicable diseases outbreaks, emerging health issues, requests for heightened surveillance related to communicable diseases, recommendations on communicable disease identification, prevention, infection control, specimen submission and laboratory testing, and emergency preparedness information.
To receive CAHAN San Diego communications, click the “Subscribe to CAHAN San Diego” button. It takes only a few minutes to sign up. PHS will not share your contact information.
CAHAN San Diego Communication Types
Alert: Conveys the highest level of importance: warrants immediate action or attention.
Advisory: Provides important information for a specific incident or situation; may not require immediate attention.
Update: Provides updated information regarding an incident or situation; unlikely to require immediate action.
Information: Provides general information that is not necessarily considered to be of an emergent nature.
See below, or click the following links, to learn view CAHAN communications:
Health Advisory—July 7
Health Advisory: Increased West Nile Virus detection in mosquitos, San Diego County
Health Advisory—July 3
Health
Advisory: Increased Invasive Meningococcal Disease (IMD), San
Diego County
Health Advisory—March 24
Health Advisory: Xylazine in the San Diego County Drug Supply
Health Advisory—March 11
Health Advisory—February 26
Health Advisory: Adverse Events Following Receipt of Injectable Ceftriaxone
Health Advisory—February 14
Health Advisory: Subtyping of Influenza A in Hospitalized Patients
Health Advisory: Increased adolescent deaths in San Diego County due to seasonal influenza
Health Advisory—February 7
Health Advisory: Marburg virus disease outbreak in Tanzania and Ebola disease outbreak in Uganda
Health Advisory—November 22
Health Advisory—November 15
Health Advisory: Increase in Mycoplasma Pneumoniae Activity in the United States
Health Advisory—November 14
Health Advisory: Pertussis Increasing in San Diego County
Health Advisory—October 25
Health Advisory: Second Locally Acquired Dengue Case in San Diego County
Health Advisory—October 18
Health Advisory: Updated California Syphilis Screening Recommendations
Health Advisory—October 10
Health
Advisory: First Marburg Virus Disease Outbreak in the Republic of Rwanda
Health Advisory—October 6
Health Advisory: First Locally Acquired Case of Dengue in San Diego County
Health Advisory—October 4
Health Advisory: Confirmed Human Cases of H5 Avian Influenza in California
Health Advisory—September 13
Health Advisory: Cross-border pollution in the Tijuana River Valley and potential health effects
Health Advisory—September 9
Health Advisory—August 30
Health Advisory: Increased Oropouche Virus Activity and Associated Risk to Travelers
Health Advisory— August 26
Health Advisory: Increase in Extensively Drug-Resistant Shigella Specimens
Health Advisory—August 26
Health Advisory: Increase in Human Parvovirus B19 Activity in the United States
Health Advisory—August 15
Health Advisory—July 24
Health Advisory: Disruptions in Availability of Becton Dickinson (BD) BACTEC™ Blood Culture Bottles
Health Advisory—June 28
Health Advisory: Increased Risk of Dengue Infections in the U.S.
Health Advisory—June 18
Health Advisory: Influenza A Testing Guidance: Enhanced Surveillance During the Summer Months
Health Advisory—June 13
Health Advisory: Severe Illness Potentially Associated with Diamond Shruumz-Brand Products
Health Advisory—May 20
Health Advisory—April 24
Health Advisory: Botulism-like Illness After Cosmetic Injections
Health Advisory—April 12
Health Advisory—April 10
Health Advisory—April 1
Health Advisory: Second Measles Case in San Diego County for 2024
Health Advisory—March 26
Health Advisory Update #3: Extension of Bicillin L-A Shortage
Health Advisory—March 22
Health Advisory Update #2: Candida auris in San Diego County
Health Advisory—March 20
Health Advisory: Measles Prevention in International Travelers
Health Advisory—February 27
Health Advisory: Increase in Tuberculosis in San Diego County
Health Advisory—February 2
Health Advisory: First Measles Case in San Diego County, since 2019
Health Advisory—January 12
Health Advisory Update #2: Outbreak of Norovirus Disease linked to Consumption of Raw Oysters
Health Advisory—January 10
Health Advisory: Suspected Foodborne Illness linked to Seafood
Health Advisory—January 8
Health Advisory—December 15
Health Advisory: Clade I Mpox Virus in Travelers to the Democratic Republic of the Congo
Health Advisory—November 27
Health Advisory—November 22
Health Advisory: Pertussis Increasing in San Diego County
Health Advisory—November 15
Health Advisory: High Blood Lead Levels in Children Consuming Recalled Cinnamon Applesauce Pouches
Health Advisory—November 3
Health Advisory: Endemic Rocky Mountain Spotted Fever (RMSF) in Baja California Region
Health Advisory—October 26
Health Advisory—October 25
Health Advisory Update #7: Local Increase in Mpox Cases
Health Alert—October 25
Health Alert: Shiga toxin-producing E. Coli Associated with Miguel’s Cocina 4S Ranch
Health Alert—October 20
Health Advisory—September 15
Health Advisory Update #63: COVID-19 Vaccine Update
Health Advisory —August 28
Health Advisory: Boil Water Advisory for Contaminated Water Supply
Health Advisory—August 18
Health Advisory—July 27
Health Advisory: Silicosis in Countertop Workers
Health Advisory—June 23
Health Advisory—June 15
Health Advisory Update #2: Bicillin® L-A Shortage
Health Advisory—June 8
Health Advisory: Fungal Meningitis in U.S. Patients Following Epidural Anesthesia in Mexico
Health Advisory—May 16
Health Advisory Update #6: Potential Risk for Mpox Resurgence
Health Advisory—May 9
Health Advisory—April 27
Health Advisory Update #62: COVID-19 Vaccine Update: Deauthorization of Monovalent mRNA Vaccines
Health Advisory—April 25
Health Advisory: Potential Access Challenges to Bicillin L-A®
Health Advisory—April 10
Health Advisory—April 7
Health Advisory: Elevated Norovirus Activity in California
Health Advisory—March 27
Health Advisory—March 22
Health Advisory—February 28
Health Advisory: Increase in Extensively Drug-Resistant Shigellosis in the United States
Health Advisory—February 10
Health Advisory—February 3
Health Advisory—January 27
Health Advisory—December 15
Health Advisory—November 30
Health Advisory Update #58: Treatment Options for Current COVID-19 Omicron Subvariants
Health Alert—November 8
Health Alert Update #2: Outbreak of Ebola Virus Disease in Central Uganda
Health Advisory—October 28
Health Advisory: Multidrug Resistant Salmonella Newport among Travelers to and from Mexico
Health Advisory—October 27
Health Alert—October 13
Health Alert: Increasing Influenza and Respiratory Syncytial Virus (RSV) Disease in San Diego County
Health Alert—October 7
Health Alert: Outbreak of Ebola Virus Disease in Central Uganda
Health Alert—September 30
Health Alert: Wound Botulism Associated with Black Tar Heroin
Health Advisory—September 20
Health Advisory—September 19
Health Advisory Update #5: Human Monkeypox Treatment with Tecovirimat and Supportive Measures
Health Advisory—September 6
Health Advisory Update #56: Coronavirus Disease 2019 (COVID-19) Vaccine Update: Bivalent Boosters
Health Advisory—August 16
Health Advisory Update #4: Human Monkeypox Vaccination with Jynneos®
Health Advisory—July 29
Health Advisory Update #55: Coronavirus Disease
2019 (COVID-19) Vaccine Update: Novavax Vaccine
Health Advisory—July 15
Health Advisory Update #3: Human Monkeypox, Testing at Commercial Laboratories
Health Advisory—July 14
Health Advisory—June 10
Health Advisory: Meningococcal Infections and Monkeypox in Men who Have Sex with Men
Health Advisory—May 24
Health Advisory—May 23
Health Advisory: Human Monkeypox
Health Advisory—May 20
Health Advisory: Human Monkeypox
Health Advisory—April 22
Health Advisory: Pediatric Hepatitis Associated with Adenovirus Type 41 Infections
Health Advisory—April 1
Health Advisory Update #52: Coronavirus Disease 2019 (COVID-19) Vaccine Update: Second Boosters
Health Advisory—February 25
Health Advisory Update #50: Coronavirus Disease 2019 (COVID-19) Vaccine Updates
Health Advisory—February 24
Health Advisory—February 14
Health Advisory: Dangerous Lead Levels Found in Dried Fruit and Candy Products, California
Health Advisory—February 11
Health Advisory—January 11
2021 CAHAN Communications
Health Advisory—December 29
Health Advisory—December 23
Health Advisory Update #46: Coronavirus Disease 2019 (COVID-19) Oral Treatment, Paxlovid
Health Advisory—December 20
Health Advisory—December 15
Health Advisory—December 2
Health Advisory Update #44: SARS-CoV-2 virus variant of concern B.1.1.529 (Omicron)
Health Advisory—November 5
Health Advisory—October 26
Health Advisory—October 14
Health Advisory—October 11
Health Advisory: Shigella sonnei among persons experiencing homeless in San Diego County
Health Advisory—October 6
Health Advisory—October 4
Health Advisory: Influenza and Respiratory Syncytial Virus Activity and Guidance for Clinicians
Health Advisory—September 28
Health Advisory: Candida auris detected in San Diego County facilities
Health Advisory—September 28
Health Advisory—September 22
Health Advisory: Guidance for Clinicians Caring for Individuals Recently Evacuated from Afghanistan
Health Advisory—August 19
Health Advisory: Increased Interseasonal Activity of Respiratory Syncytial Virus in San Diego County
Health Advisory —August 19
Health Advisory Update #39: Coronavirus Disease 2019 (COVID-19) Vaccine Update
Health Advisory —July 30
Health Advisory Update #38: Coronavirus Disease 2019 (COVID-19) Urgent Need to Increase Vaccination
Health Advisory—July 22
Health Advisory Update #37: Coronavirus Disease 2019 (COVID-19) Monoclonal Antibody Therapies
Health Advisory—July 7
Health Advisory: Recall of LeadCare® Blood Lead Tests Due to Risk of Falsely Low Results
Health Advisory—June 4
Health Advisory Update #36: Coronavirus Disease 2019 (COVID-19) Monoclonal Antibody Therapies
Health Advisory—June 3
Health Advisory—May 28
Health Advisory: Acute Non-Viral Hepatitis
Associated with an
Alkaline Water Product
Health Advisory—May 20
Health Advisory—May 13
Health Advisory—April 26
Health Advisory Update #32: Coronavirus Disease 2019 (COVID-19) Vaccine Update
Health Advisory—April 15
Health Advisory Update #31: Coronavirus Disease 2019 (COVID-19) Vaccine Adverse Events and Update
Health Advisory—April 13
Health Advisory Update #30: Coronavirus Disease 2019 ( COVID-19) Vaccine Update
Health Advisory—April 12
Health Advisory Update #29: Coronavirus Disease 2019 (COVID-19) Vaccine Update
Health Advisory—March 16
Health Advisory Update #28: Coronavirus Disease 2019 (COVID-19) Vaccine Update
Health Advisory—March 15
Ebola Virus Disease Outbreaks Democratic Republic of Congo & Guinea
Health Update—March 2
Update #27: Coronavirus Disease 2019 (COVID-19) Variants
Health Update—March 1
Update #26: Coronavirus Disease 2019 (COVID-19) Vaccine and Monoclonal Antibody Update
Health Update—February 23
Health Advisory—February 18
Health Update—February 2
Update #25: Coronavirus Disease 2019 (COVID-19) Vaccine Updates
Health Update—January 27
Update #24: Coronavirus Disease 2019 (COVID-19) Quarantine Update
Health Update—January 21
Update #23: Coronavirus Disease 2019 (COVID-19) Vaccine Updates
Health Advisory—January 12
Expanded Syphilis Screening Recommendations for Prevention of Congenital Syphilis
Health Update—January 8
Update #22: Coronavirus Disease 2019 (COVID-19) Vaccine Update
Health Update—January 6
Federal, State, and Regional Communications Links
Federal
State
- California Department of Public Health—Health Communications
- California Department of Public Health Food Recalls
Regional
For more information, contact the Epidemiology Unit at (619) 692-8499 or send us an e-mail.
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