These Health Alerts are sent out through the California Health Alert Network (CAHAN) to Yolo County Healthcare Providers.

• If you are a Yolo County Healthcare Provider and would like to receive Health Alerts please complete this CAHAN Sign up form
• If you are unsure if you are in CAHAN or would like to verify your contact information please contact the CAHAN Coordinator at 530-666-8665

Yolo County Health Alerts

• Mandatory Influenza Vaccination for All Health Care Workers in Yolo County 
• Respiratory virus outbreak prevention, control, and reporting in skilled nursing facilities - 7/23/24
• Influenza A testing and subtyping in light of H5N1 - 6/14/24
• Increasing Measles Risk - 2/14/2024
• Ciprofloxacin-resistant Neisseria meningitidis; discontinue use of ciprofloxacin for postexposure prophylaxis 1/25/24
• COVID-19 Isolation Recommendations
• Yolo County Masking Order 10/3/2023
• Winter Virus Provider Memo 10/3/2023
• April 3, 2023, Health Alert, Report pregnancy status of syphilis cases
• March 27, 2023, Health Alert, Review of COVID-19 Policies, Including Upcoming Changes
• February 24, 2023, Health Advisory, Increase in Extensively Drug-Resistant Shigellosis in the United States 
• November 29, 2022, Reminder to Prescribe COVID-19 Therapeutics to Mitigate Impact of Winter Respiratory Surge 
• November 14, 2022, Memo addressing anticipated pediatric patient surges at clinic and hospitals
• October 11, 2022 - Mandatory Influenza Vaccination for All Health Care Workers in Yolo County
• March 31, 2022 - Use of Outpatient COVID-19 Therapeutics in California
• March 10, 2022 - Update on Oral Antivirals for Treatment of COVID-19
• December 28, 2021 - Oral Antivirals for Treatment of COVID-19
• October 15, 2021 - Health Officer Order - Mandatory Influenza Vaccination for Health Care Workers
• September 21, 2021 - Health Advisory - Guidance for Clinicians Caring for Individuals Recently Evacuated from Afghanistan
• September 17, 2021 - Health Advisory - Increases in Availability of Cannabis Products Containing Delta-8 THC
• August 26, 2021 - Health Advisory - Rapid Increase in Ivermectin Prescriptions
• August 18, 2021 - Health Advisory - Off-Season Respiratory Syncytial Virus Infections and Use of Palivizumab
• August 9, 2021 - Health Advisory -Burkholderia pseudomallei Infections (Melioidosis)
• July 6, 2021 - Health Advisory - Burkholderia pseudomallei Infections (Melioidosis)
• July 6, 2021 - Health Advisory - Recall of LeadCare® Blood Lead Tests
• June 11, 2021 - Health Advisory - Increased Inter-seasonal Respiratory Syncytial Virus (RSV)
• May 29, 2021 - Health Advisory -  Bamlanivimab plus Etesevimab No Longer Recommended
• May 28, 2021 - Health Advisory - Myocarditis & Pericarditis 
• May 26, 2021 - Health Advisory - Acute Non-Viral Hepatitis
• May 21, 2021 - Health Advisory - Outbreak of Highly Drug resistant Carbapenemase
• May 4, 2021 - Health Advisory - Fully Vaccinated Persons Who Test Positive for COVID-19
• April 13, 2021 - Rescission of Previous Travel Advisory and Reversion to State Travel Advisory
• March 23, 2021 - Yolo County Public Health Officer Order# 2020-03.1 Rescinded
• March 4, 2021 - New Recommendations for Syphilis Screening and Gonococcal Infection Treatment
• January 28, 2021 - COVID-19 Death Reporting
• January 5, 2021 - Amended Health Order for Long Term Care Facilities 1/4/2021 
• December 21, 2020 Revised Health Advisory for Shorter Quarantine 
• December 18, 2020 - Amended Mass Quarantine Order of the Yolo County Public Health Officer
• December 18, 2020 - Isolation and Quarantine Tool Kit
• December 18, 2020 - Revised Self-Quarantine after Travel
• December 18, 2020 -  Revised COVID-19 Quarantine Guidance
• December 17, 2020 -  Quarantine Guidance for Healthcare Personnel After Unprotected Exposure of SARS-CoV-2
• December 17, 2020 - Use of BinaxNOW Antigen Tests in Asymptomatic Persons 
• December 2, 2020-Healthcare Provider Responsibilities for Isolation & Quarantine - Isolation Form - Quarantine Form
• December 2, 2020 - Health Order 2020-03 LTC COVID-19 testing 
• November 19, 2020 - Self-Quarantine after Travel
• November 13, 2020 - COVID-19 Clinical Diagnoses
• November 5, 2020 - New COVID-19 Close Contact Definition
• October 29, 2020 - COVID-19 Death Reporting
• October 28, 2020 - Free COVID -19 Testing Sites for November
• October 10, 2020 - Health Advisory: COVID-19 clinical Diagnosis and Contract Testing Updates
• October 1, 2020 - Health Officer Order: Masking Order
• May 7, 2020 - COVID-19 Related Admission Guidelines for LTC and SNFs
• April 28, 2020 - COVID-19 Death Reporting
• April 8, 2020 - COVID-19 Outbreak Prevention and Control in Long Term Care Facilities
• April 2, 2020 - COVID-19 Healthcare Provider Update
• March 25, 2020 - Lifting of Influenza Masking Mandate
• March 18, 2020 - COVID-19 Testing Updates
• March 4, 2020 - Health Advisory, Strategies to Prevent the Spread of COVID-19 in Long-Term Care Facilities (LTCF) 
• March 3, 2020 - 2019 Novel Coronavirus (COVID-19) Yolo County Health Advisory and Interim Guidance - UPDATED
• February 28, 2020 - 2019 Novel Coronavirus (COVID-19) Yolo County Health Advisory and Interim Guidance 
• February 25, 2020 - 2019 Novel Coronavirus (COVID-19) School Guidance
• February 21, 2020 - Influenza Health Advisory, Masking Mandate
• February 10, 2020 - 2019 Novel Coronavirus Guidance for K-12 Schools and School Districts
• February 5, 2020 - Scabies and Influenza Outbreak in Long Term Care Facilities
• January 31, 2020 - Updated 2019 Novel Coronavirus Outbreak in Wuhan, China
• January 24, 2020 -  Novel Coronavirus Outbreak in Wuhan, China
• January 15, 2020 - Chicken Exposure at Yolo County Adult Care Facilities 
• January 15, 2020 - Identification and Reporting of Chickenpox Cases

Yolo County  Health and Human Services Agency
 Communicable Diseases
 137 N Cottonwood Street, Woodland, CA 95695

Business Hours: Monday through Friday 8:00 am to 5:00 pm
Main Line (530) 666-8645, Confidential Fax (530) 669-1549
After Business Hours (24/7) Contact the MHOAC at (530) 321-3620

Yolo County Press Releases   |   Health Alerts (CAHAN)   |   List of Reportable Diseases(PDF)   |   Report a Concern

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