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COVID-19
  • Home Page
  • Data & Surveillance
    • COVID-19 Data
  • Vaccines
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  • Masking
  • Testing & Treatment
    • Testing
    • Treatment
  • Long COVID
  • Isolation
  • Outbreak Reporting Requirements
  • Long-term Care Facilities/Adult Day Program
  • Schools/Childcare
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    • Workplace Guidance
  • News & Media
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Isolation Guidance

How long do I need to stay home if I have COVID-19?

Alameda County is aligned with CDPH and CDC respiratory virus guidance.  

Respiratory Virus Guidance Snapshot

  • Stay home if you have COVID-19 symptoms until you have not had a fever for 24 hours (without using fever reducing medication) AND other COVID-19 symptoms​ are improving.​ 
  • After you return to your normal activities, you may still be able to spread the virus to others.* Take precautions for the next 5 days, when you will be around others, to help reduce this risk:   
    • Wear a well-fitting, high-quality mask 
    • Practice physical distancing
    • Avoid contact with people at higher-risk for severe COVID-19. Higher-risk individuals include the elderly and those who live in congregate care facilities. 
    • After this 5-day period, you are typically much less likely to be contagious. However, some people, especially people with weakened immune systems, can continue to spread the virus for a longer period of time.   
  • Seek Treatment​. If you have symptoms, contact a healthcare provider as soon as you test positive, especially if you are at higher risk for severe COVID-19  
    ​​​*You can be infectious 2 days before symptoms begin or you test positive (if no symptoms) through Day 10. (Day 0 is the date of symptoms or positive test). 
Some workplaces are subject to the Cal/OSHA Aerosol Transmissible Diseases (ATD) Standard (PDF) and should consult those regulations for additional requirements.

Healthcare Settings

Healthcare personnel in general acute care hospital​s​, acute psychiatric hospitals, and skilled nursing facilities should follow recommendations as set forth in AFL 25-01. Healthcare personnel working in settings not covered by AFL 25-01​ may also follow the guidance outlined in AFL 25.01. Healthcare facilities should follow the guidance for management of exposed or infected patients/residents in CDC’s Infection Control Guidance: SARS-CoV-2​.
Alameda County Health Public Health Department
  • 510.577.7080
  • emailncov@acgov.org

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  • Home Page
  • Data & Surveillance
  • Vaccines
  • Masking
  • Testing & Treatment
  • Long COVID
  • Isolation
  • Outbreak Reporting Requirements
  • Long-term Care Facilities/Adult Day Program
  • Schools/Childcare
  • Workplace
  • News & Media
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