COVID-19 guidance and resources by setting

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The following is guidance for responding to COVID-19 outbreaks in settings where mitigation remains critical.

General COVID-19 information

COVID-19 definitions

Common definitions: A clear understanding of the following terms is critical for managing worksite exposures and/or outbreak(s).

Term Definition
COVID-19 Case A person who tests positive for COVID-19 is considered a “case” and must isolate until it is safe for them to be around others.
Calculating day 1 of Isolation If the employee has symptoms, the date when symptoms started is considered day zero of their isolation. Day one is the first full day after their symptoms started.

If the employee has no symptoms, the date of their positive test is considered day zero. Day one is the first full day after their positive test.

Close contact  Someone sharing the same indoor airspace, e.g., home, clinic waiting room, airplane for a cumulative total of 15 minutes or more over a 24-hour period. For example, someone having three separate five-minute interactions with a case (for a total of 15 minutes over the course of a day) during an infected person’s infectious period is considered a close contact.
Infectious period Infectious period is the 48 hours before the COVID-19 positive case developed symptoms (or 48 hours before positive test date if no symptoms) until that person is no longer contagious (usually another 10 days).
Worksite exposure When a case works during their infectious period.
Outbreak Three or more employee COVID-19 cases that visited the workplace within 14 days in your worksite/ business.
Major outbreak  Twenty or more employee COVID-19 cases that visited the workplace within 30 days in your worksite/ business.
Antigen test  An antigen test may be done at work, in a clinic or at home. It detects specific proteins on the surface of the coronavirus. Results may come back in as little as 15 to 45 minutes.
PCR test A PCR test administered by a clinical professional detects genetic material of the virus using a lab technique called reverse transcription polymerase chain reaction.
Exposed work group  Defined as all employees at a work location working area, or common area, at work where an COVID-19 positive employee (case) was present and contagious.

COVID-19 Symptoms

List of symptoms (Do not allow sick workers who report COVID-19 symptoms to report to work):

COVID-19 Symptoms
Fever >100.4F (38C); or
Subjective Fever (Felt feverish)
Abdominal pain

(>3 loose/looser than normal stools in 24 hr. period)


(New onset or worsening of chronic cough)

Muscle Aches (Myalgia) Runny Nose
Shortness of breath (Dyspnea)


Headache Sore Throat
Congestion Tingling or numbness Nausea or vomiting

Additional Resources

COVID-19 Regulation Updates and Guidance

COVID-19 Prevention Emergency Temporary Standards


COVID-19 Prevention Emergency Temporary Standards – FAQs


COVID-19 Prevention Emergency Temporary Standards – What Employees Need to Know

Sonoma County Emergency Response

Coronavirus response

Sonoma County Health Orders

Health orders (by date)

Sonoma County Department of Public Health

HIPAA regulation

California Department of Public Health (CDPH)

COVID-19 response

CA.Gov Development and Workforce Agency

Resources for employers and workers

Centers for Disease Control and Prevention (CDC)

COVID-19 workplaces and businesses

California Department of Public Health Beyond the blueprint for industry and business sectors (includes travel and mega events)
Agriculture Farmworker Information
Centers for Disease Control and Prevention (CDC)

H2A workers protect yourselfPrintable Poster (Spanish)

H2A Workers Protect Yourself – Printable poster (English)

Centers for Disease Control and Prevention (CDC)

Protect yourself – H2 workers from Mexico to US

Agriculture workers and employers

Centers for Disease Control and Prevention (CDC)

Shared transportationPrintable poster (Spanish)

Shared transportation – Printable poster (English)

Local Government Agency Contact Information
Sonoma County Department of Public Health – Business and Worksite Response Team


Cal/OSHA Reporting Office:

Phone: (707) 649-3700


Cal/OSHA Inquiries

Phone: (510) 622-2891


Sonoma County Environmental Health

Phone: (707) 565-6565


CDPH Guidance and Plans

    • Find all guidance (CDPH) – Quickly navigate through COVID-19 guidance by topic.
    • SMARTER plan (CDPH) – Learn more about CDPH’s COVID-19 response framework.
  • CA Testing Taskforce – Partner with CDPH to start your own testing site with materials and training provided by the State.
  • COVID-19 Testing (Sonoma County) – Local information about how, when and where to get tested.

N95 Fit Testing Training Guide:

About this Program In order to promote COVID-19 and ATD safety, the County of Sonoma Department of Public Health has made available this program for N95 Fit Testing Training. 

This resource will enable your facility to perform in-house N95 fit testing for your staff and/or residents by providing N95 Fit Testing Kits, and training on how to perform fit testing.

How to Schedule Fit Testing Training You can sign up on the Google spreadsheet for Zoom N95 Fit Testing/ training and donning/doffing of PPE. We offer it Thursday at 10am. 

After signing up, please review these PowerPoint Slides and links prior to your Zoom session.  Find here:

N95 train trainer3.17.22 – Kit Sanitation & Tips & Tricks added.pptx

Kit Loan Process

Drop off and Pick Up

  • Please complete the N95 fit testing kit request form at least 2 business days prior to your requested pick up
  • When your request is approved, you will be sent a confirmation email
  • Pick up and drop off of N95 Fit Testing Kits will be at 415 Humboldt Street, Santa Rosa, CA (Once you enter the lobby, go to the door on the left and ring the doorbell)
Preparation for Your Team
  • **Per Cal/OSHA requirements all HCP/employees that have never been fit tested must complete the Medical Questionnaire and have their PCP or a medical doctor (not part of management) sign off on it prior to being fit tested
  • Please ensure that you have at least one staff available to perform the fit testing after completing the provided training
Safety Guidance and Infection Control
Resource, Helpful Info, and Other Fit Testing Options



For Cal/OSHA inquiries, email OaklandConsultation@dir.ca.gov or call (510)622-2891.
For case reporting or additional guidance questions, email covid.nurse@sonoma-county.org.
For additional testing questions, email COVIDtest@sonoma-county.org.

This guidance has been updated to incorporate the new guidance from California Department of Public Health (CDPH) and to reflect the revisions adopted by California Occupational Safety and Health Standards Board that went into effect April 6, 2022 and May 6, 2022, respectively.

Three or more cases of COVID-19 in the workplace within a 14-day period must be reported to local Public Health at SPOT (Shared Portal for Outbreak Tracking).


Step-by-step guide to managing COVID-19 worksite cases and outbreaks

 Step 1: Determine isolation and quarantine

What to Do: Determine if employee needs to Isolate or Quarantine

All workers who test positive for COVID-19, regardless of vaccination
status should follow CDPH and Cal/OSHA recommendations.

Close contacts who are exposed to someone with COVID-19 should follow CDPH and Cal/OSHA recommendations, regardless of vaccination status.


Step 2: Communicate with employees

What to do: Communicate and educate employees 
Communicate to Employees:

Notify all employees present during exposure

  • Within one business day from the time of identifying the COVID-19 case(s), give written notice to close contacts and all employees present at the worksite during the infectious period of potential COVID-19 exposure.
  • Do not share personal identifying information of the COVID-19 Case
  • Educate employees on company procedures for reporting symptoms and illness without fear of retaliation.
  • Advise employees not to report to work when sick.
  • Provide training and instruction to employees on how to self-screen for symptoms.
  • Provide COVID-19 Isolation and Quarantine training and Instructions to cases and close contacts.


Step 3: Document and record

What to do: Document and record all cases and close contacts 
Document all COVID-19 positive employees and their close contacts 
  • Document and record all positive COVID-19 cases and close contacts per Cal/OSHA guidelines.
  • Keep record of and track all COVID-19 cases and close contacts.
Resource Weblinks 


Step 4: Report Information

What to do: Report to agencies 
Report Worksite Outbreaks to Sonoma County Public Health:

A Worksite Outbreak is 3 or more positive

COVID-19 cases within 14 days.


  • Register your business with SPOT (Shared Portal for Outbreak Tracking).
  • Report all suspected outbreaks within 48 hours to your local health department at SPOT (Shared Portal for Outbreak Tracking).
  • Anticipate a request for a scheduled meeting with a public health nurse for further guidance and follow-up within 72 hours (depending on capacity).
  • Engage in open communication with Sonoma County Public Health to discuss COVID-19 cases and measures to contain the outbreak.
  • Less than 3 cases in 14 days do not need to be reported to Sonoma County Public Health.
Report hospitalizations and deaths to Cal/OSHA
  • Notify Cal/OSHA immediately of COVID-19 hospitalizations or deaths by phone or email.
Resource Weblinks 


Step 5: Employee COVID-19 testing

What to do: Provide free COVID-19 testing 
Exposed employees should be tested following CDPH and Cal/OSHA recommendations.
Resource Weblinks 


Step 6: Share COVID-19 vaccine information with employees

What to do: Provide free COVID-19 vaccinations 
COVID-19 vaccine information 
  • Provide information on a no-cost option for COVID-19 Vaccines.
Resource Weblinks 


Step 7: Review your COVID-19 prevention plan and educate employees

What to do: Establish a COVID-19 prevention plan 
Establish and implement a COVID-19 Prevention Plan
  • Cal/OSHA requires employers to establish, implement, and maintain an effective COVID-19 Prevention Plan.
  • Refer to the Cal/OSHA COVID-19 Temporary Emergency Standards website for details, and to view a sample COVID-19 Model Prevention Plan.
  • Investigate new or unaddressed COVID-19 hazards in the workplace and implement changes as required.
  • Increase your infection control measures on site and in employer-provided transportation. Simple steps might include physical distancing, appropriate masks or respirator use, appropriate disinfecting and cleaning, improving air ventilation and filtration.
  • Provide training and instruction to employees on your company COVID-19 Prevention Plan.
Resource Weblinks 


Step 8: Supply personal protective equipment (PPE)

What to do: Provide PPE 
Supply PPE to Employees 
  • Cal/OSHA requires employers to provide face coverings in outbreaks.
  • Educate employees on how to properly wear a face covering.
  • All employees can request face coverings from the employer at no cost to the employee, regardless of vaccination status, without fear of retaliation.
  • Employers shall review CDPH and local health department recommendations regarding face coverings and implement face covering policies that effectively eliminate or minimize transmission in vehicles.
Resource Weblinks 

Health care


Psychiatric Facilities:

Congregate shelters, Behavioral Residential, MADF:


  • Resource folder for COVID-19 school/youth liaisons (Sonoma County) – Quick links to guidance, tools for case reporting, and reference materials for COVID coordinators and liaisons.
  • Safe Schools For All (SS4A) hub – (CDPH) California’s SS4A landing page. Current guidance and other helpful resources for schools and child care facilities.
  • Parent Page (CDPH) – Regularly updated information on COVID-19 safety, testing, vaccination and child care resources for families.