Skip to navigation Skip to content Skip to footer
Search SCCGOV Main Portal

Home Isolation and Quarantine Guidance - Contact Tracing

UPDATE: As of February 24, 2021, the County updated its quarantine guidance for people who have completed their COVID-19 vaccination. If you have been fully vaccinated, please see section below on “Quarantine guidance for people fully vaccinated”. If you have not been vaccinated or have not completed your full vaccination series, please continue to follow existing quarantine guidance contained in this page.

​Table of Contents

​Home Isolation and Quarantine Guidance (revised 2/19/2021)

PDF:  | English​ | Chinese​ | Spanish​ | Vietnamese​ | Tagalog |


Do you need to be tested for COVID-19?

Anyone experiencing any of the COVID-19 symptoms below should get tested, whether or not you had close-contact to someone confirmed to have COVID-19, and whether or not you have been vaccinated.

  • Fever or chills
  • Cough
  • Shortness of breath or difficulty breathing
  • Fatigue
  • Muscle or body aches
  • Headache
  • Sore throat
  • Loss of taste or smell
  • Nausea, diarrhea, or vomiting​ 

Back to Top ▲

Quarantine Guidance forfully vaccinated people

Following the direction of the CDC and CDPH, the County of Santa Clara Public Health Department has issued new quarantine guidance for people who have been fully vaccinated.

If you have completed your COVID-19 vaccination and you have been a close contact to someone with COVID-19, you do NOT need to quarantine if you meet ALL the conditions listed below.

  • Are fully vaccinated (this means 2 or more weeks have passed after you received the second dose in a 2-dose vaccine series, or 2 or more weeks have passed after you received one dose of a single-dose vaccine), 
  • Are within 3 months after you received the last dose in the vaccine series, 
  • Do not have symptoms of COVID-19 since the current exposure. (If you have COVID-19 symptoms, isolate and get tested immediately.) 
  • Are not an inpatient or resident in a healthcare setting or facility 

If you do not meet ALL of the above criteria you should continue to follow current County quarantine guidance after exposure to someone with suspected or confirmed COVID-19. 

These criteria may also be applied when considering work restrictions for fully vaccinated healthcare personnel with higher-risk exposures, as a strategy to alleviate staffing shortages. Such exposed healthcare personnel are not required to quarantine outside of work. Existing recommendations allow exposed healthcare workers to return to work after exposure, if staffing levels require. See COVID-19 Quarantine Guidance for Healthcare Workers During Critical Staffing Shortages for more information.  

*Fully vaccinated inpatients and residents in healthcare settings should continue to follow CDPH quarantine guidance for healthcare settings following an exposure to someone with suspected or confirmed COVID-19; outpatients should be cared for using appropriate Transmission-Based Precautions.  

For more information, see CDC Interim Clinical Considerations for Use of mRNA COVID-19 Vaccines Currently Authorized in the United States


What should I do while I'm waiting for test results?

If you were a close contact of a person with COVID-19 and have no symptoms, then follow the Quarantine Steps while you are waiting for your test results.

If you are not a close contact of someone with COVID-19 and do not have COVID-19 symptoms, you just need to wait for your test results. You do not need to follow Isolation or Quarantine Steps.

If you develop any of the COVID-19 symptoms, and they are new symptoms that you do not usually have in daily life, then you may have COVID-19 and you must follow the Home Isolation Steps​.


Back to Top ▲

Who is a close contact?

A close contact is someone who was within 6 feet of the infected person for at least 15 minutes at any time beginning 2 days before the infected person had symptoms or tested positive.  Close contacts include people who had 15 minutes of continuous contact with the infected person, as well as people who had repeated short-duration interactions with the infected person.  In addition, while face coverings do reduce the likelihood of COVID-19 transmission, they have no impact on the determination of whether someone is a close contact and should quarantine.​


Back to Top ▲

When is a person with COVID-19 considered contagious?

A person who tests positive for COVID-19 is considered contagious starting 48 hours before symptoms began until at least 10 days after symptom onset AND at least 24 hours after resolution of fever without the use of fever-reducing medications (like Tylenol or ibuprofen) AND improvement of other symptoms. If a person who tests positive has NO symptoms, that person is considered contagious starting 48 hours before their first positive test was collected until 10 days after their first positive test was collected.


Back to Top ▲

What is isolation? What is quarantine?

Both words mean staying home, without contact with others, for a certain period of time in order to prevent the spread of disease. “Isolation” is used for a person who has had a positive test result and is likely contagious, and “quarantine” is used if a person was in close contact with someone who had a positive test result and might become contagious in the near future.

Everyone who is isolating or quarantining should:

  • Stay Home
  • Separate yourself from others in your home
  • Do not allow visitors
  • Do not use public transportation
  • Do not prepare or serve food to others
  • If you are unable to isolate or quarantine safely at home, let the Santa Clara County COVID Support Team member know when they call you. They will work to assess your eligibility for housing, food, or other support services.

Depending on if you are in Isolation or in Quarantine, there are additional actions you should take below.


Back to Top ▲

Do I need to quarantine after traveling?

Under the State of California’s current travel recommendations, Californians should remain local (not traveling more than 120 miles from their home or other place of residence) and avoid all non-essential travel.  Travel from other states or countries into California for tourism and recreation is strongly discouraged.  Anyone traveling into California should self-quarantine for 10 days, unless quarantining is impracticable and the travel is for the sole purpose of meeting critical healthcare needs or other emergency response needs.

Please read the California Department of Public Health’s Travel Advisory for more information on State travel-related recommendations.


Back to Top ▲

Home Isolation Steps: What should I do if I become positive or am told to isolate?

If you have been diagnosed with COVID-19 or are waiting for COVID-19 test results, you must follow the Home Isolation Steps to prevent the spread of disease.

Stay home until you have recovered and are not infectious

  • Most people with COVID-19 have mild illness and can recover at home.
  • Monitor your symptoms closely and seek medical care if symptoms worsen. It is particularly important to call your doctor if your symptoms worsen and you are 60 years or older or have a condition such as heart, lung, or kidney disease, diabetes, high blood pressure, or a weakened immune system. You are at higher risk of getting more seriously ill.
  • Do not go to work, school, or public areas.
  • If you have symptoms, you can be with others after:
    • 10 days since symptoms first appeared, AND
    • 24 hours with no fever (without fever-reducing medication), AND
    • Improvements of other symptoms
  • If you have no symptoms, you can be with others after:
    • 10 days have passed since your first positive test was collected

You can also use this Quarantine and Isolation Calculator* to confirm when you can leave isolation. (Please select option for either “You have tested positive and have symptoms” OR “You have tested positive but have no symptoms,” depending on whether you have symptoms or not.)

*Please note, this calculator is the property of San Bernardino County. Santa Clara County does not control the information contained in this third party application, and is not responsible for its use or misuse. Please consult current county guidance when using this application.

Close Contacts

  • If you have a test confirmation or doctor’s diagnosis of COVID-19, then everyone who you had close contact with from 48 hours before your symptoms began until you self-isolated should follow the Home Quarantine Steps. Please share this page with them.
  • To request help in notifying your Close Contacts without revealing your identity to them, please call 408-970-2870.

What if you cannot separate yourself from others?

  • If you have COVID-19, anyone who continues to be in close contact with you when you are in isolation will need to extend their quarantine until 10 days from the day you finish isolating. This may last about 20 days.


Back to Top ▲

Home Quarantine Steps: What should I do if I find out that I’ve been in close contact with a case?

NEW If you have completed your COVID-19 vaccination and you have been a close contact to a COVID-19 case, you do not need to quarantine if you meet ALL the conditions listed below.

  • Are fully vaccinated (this means 2 or more weeks have passed after you received the second dose in a 2-dose vaccine series, or 2 or more weeks have passed after you received one dose of a single-dose vaccine),
  • Are within 3 months after you received the last dose in the vaccine series,
  • Do not have symptoms of COVID-19 since the current exposure (if you have COVID-19 symptoms, isolate and get tested immediately).

If you do not meet ALL 3 of the above criteria you should continue to follow current County quarantine guidance after exposure to someone with suspected or confirmed COVID-19. 

If the above does not apply to you, please follow general quarantine guidelines below:

If you live in a household with or had close contact with someone diagnosed with COVID-19 (including contact from 48 hours before that person had any symptoms, until they self-isolated) you must follow these Home Quarantine Steps below. It can take up to 14 days to become ill if you become infected with COVID-19. You must monitor your own health during this time to prevent passing infection to anyone else. You must stay home regardless of negative test results and continue to quarantine for the full 10-day period and continue monitoring for symptoms for a full 14 days.

You can use this Quarantine and Isolation Calculator to confirm when you can leave quarantine. Please make sure to select the option for “You have been identified as a close contact.”

Stay home because you may become contagious

  • If you are unable to avoid close contact with the person with COVID-19, you must continue to stay in quarantine for 10 full days. Quarantine starts when the case’s isolation period begins and ends 10 days after case’s isolation period. This could mean quarantine for 20 days.
  • You should get tested on Day 6 or later from last exposure to person with COVID-19 if you don’t have symptoms (and immediately if you do have symptoms). Close contact without symptoms may end quarantine after Day 10 from last exposure but should continue monitoring for symptoms for a full 14 days.​  If for any reason, you get tested earlier than 6 days from the last time you were in close contact with a confirmed case, you should get tested again towards the end of your quarantined period.​ Please find testing information here.
  • Close contacts who develop symptoms before Day 10, but who test negative must remain in quarantine for at least 10 days AND until 24 hours after fever resolution and improvement in other symptoms, whichever is longer. Close contacts who develop symptoms between Days 11 – 14 but who test negative must remain in quarantine until 24 hours after fever resolution and improvement in other symptoms.
  • The general quarantine guidance above applies to healthcare workers under normal circumstances, and HCWs who have routine workplace exposures that are not high risk should continue to follow their employer’s guidance for returning to work.

    What if you develop symptoms?

  • If you develop any of the COVID symptoms you must follow the Home Isolation Steps​.
  • Get tested as soon as possible. Testing Resources​
  • Monitor your symptoms closely and seek medical care if your symptoms are severe or your symptoms worsen, especially if you are at a higher risk of serious illness. ​

Which groups may need to follow different quarantine instructions?

If you are in one of the following sectors (Fire Departments; Law Enforcement and Community Corrections; 9-1-1 Dispatch; Healthcare Delivery) and compliance with the Public Health Department’s isolation and quarantine guidance would compromise your continuity of service, you should review the section below on COVID-19 Quarantine Guidance for Healthcare Workers During Critical Staffing Shortages and contact your employer for additional guidance.


COVID-19 Quarantine Guidance for Healthcare Workers** During Critical Staffing Shortages

NEW Quarantine Guidance for Fully Vaccinated People

On February 10, 2021, CDC updated COVID-19 quarantine guidance for fully vaccinated people, supported by CDPH in a letter issued February 15, 2021.
The County of Santa Clara Public Health Department supports this guidance, which is stated below:

  • Vaccinated persons* with an exposure to someone with suspected or confirmed COVID-19 are not required to quarantine if they meet all of the following criteria:
    • Are fully vaccinated (i.e., ≥2 weeks following receipt of the second dose in a 2-dose series, or ≥2 weeks following receipt of one dose of a single-dose vaccine),
    • Are within 3 months following receipt of the last dose in the series.
    • Have remained asymptomatic since the current COVID-19 exposure (if symptomatic, isolate and get tested immediately).

Persons who do not meet all 3 of the above criteria should continue to follow current County quarantine guidance after exposure to someone with suspected or confirmed COVID-19.


These criteria may also be applied when considering work restrictions for fully vaccinated healthcare personnel with higher-risk exposures, as a strategy to alleviate staffing shortages. Exposed healthcare personnel are not required to quarantine outside of work. Existing recommendations allow exposed healthcare workers to return to work after exposure if staffing levels require. See below for more information.

COVID-19 Quarantine Guidance for Healthcare Workers** during Critical Staffing Shortages

If critical staffing shortages exist, healthcare workers may follow the recommendations outlined below.

Healthcare workers who have been exposed to a COVID-19 positive person in the household or in the community, or during a high-risk exposure in the workplace (e.g., not wearing required PPE), may continue to work or return to work during the quarantine period (which, for this scenario, is defined as 10 days from the date of last exposure to the COVID-19 positive person) under the following conditions:

  • The HCW remains asymptomatic.
  • The HCW undergoes the following testing regimen:
    • A COVID-19 test is done immediately upon learning of their exposure and the test result is negative.
    • The HCW remains off work until this initial COVID-19 test is resulted.
    • Thereafter, during the remainder of the quarantine period, the HCW’s COVID-19 status shall be monitored with daily rapid antigen tests or RT-PCR tests every 3 days. Test type and frequency will depend on the facility’s testing availability and schedules.
  • The HCW wears an N95 respirator and all other required PPE at all times while at work during the quarantine period.
  • The HCW does not eat, drink, or unmask around others at any time, regardless of social distancing.
  • The HCW continues to monitor COVID-19 symptoms daily. If the HCW develops symptoms, the HCW should leave work, contact their manager/employee health, and be tested.
  • The HCW maximizes social distancing (even beyond 6 feet) wherever possible with both patients and co-workers, and maintains excellent hand hygiene at all times.
  • The HCW does not work with severely immunocompromised patients or individuals (e.g., cancer, organ transplants).
  • The HCW’s work duties are assigned in a manner that minimizes the number of different patients cared for by the HCW.
  • The HCW is still under home quarantine for 10 days after last exposure except to go to work. The HCW must not carpool, taxi, or rideshare.

The Public Health Department is also recommending testing for the following groups of people even if they do not have any symptoms:

  • Any front line or healthcare worker who regularly interacts with members of the public and cannot maintain social distancing at work should ideally get tested once a month.
  • This may include those who work in healthcare, homeless shelters, jails and other custodial settings, food banks, public safety/emergency response, food service, grocery, construction, delivery, janitorial, transit, or social work, among other jobs.

This does not include those who are able to maintain social distancing while at work, such as essential workers who work in a back office.

Any person who works in a skilled nursing facility should ideally get tested every two weeks.

To find more information about who should be tested and to find testing sites, visit


Returning to Work and School

PDF:  | English | Spanish | Vietnamese | Chinese | Tagalog​ |

If you have completed your isolation and quarantine period as told to you by the Public Health Department, you may no longer be considered contagious or at high risk for infection. The Public Health Department does not provide Return to Work or Work Excuse Letters for employees or employers or School Excuse Letters for students.  You may download and print this letter showing proof that you can return to work or school if you meet the criteria in the letter and that your employer or school should not request proof of a negative test.

If your employer is requiring your return to work prior to the end of the Isolation guidance or Quarantine guidance provided by your health care provider and the County’s Public Health Department, please contact the Office of Labor Standards Enforcement’s free legal advice line at 1-866-870-7725 or visit to file a complaint.  Legal Advice Line attorneys are not County staff, and advice is available in English, Spanish, Vietnamese, Chinese and Tagalog.

Back to Top ▲

If I have COVID-19, can I still breastfeed my child?

Breastfeeding has been shown to have many benefits to both infants and breastfeeding parents, but because in most circumstances breastfeeding requires the parent and child to be less than 6 feet apart, if a parent has COVID-19, there is a significant risk of COVID-19 transmission from the parent to the infant.

The decision whether to breastfeed is a complex and personal one, and there are multiple options to reduce the risk of COVID for the infant while continuing to breastfeed:

  • A parent may choose to continue breastfeeding during the period they are contagious with COVID-19 and reduce risk to the infant by consistently wearing a face covering, performing frequent hand hygiene before and after breastfeeding, and reducing total amount of time spent within 6 feet of the infant where possible.
  • A breastfeeding parent may choose to pump and have another adult bottle-feed expressed breastmilk to the infant during the period the COVID+ parent is instructed to isolate. Hand hygiene and following cleaning instructions for pump parts, bottles, and other feeding supplies may further reduce risk.
  • Another option is to pump to maintain lactation during the period the COVID+ parent is instructed to isolate and have another adult bottle-feed formula to the infant (“pump and dump.”)
  • Finally, a parent may choose to stop breastfeeding during the period they are in isolation for COVID-19 in order to reduce risk of COVID-19 transmission, even though they may not be able to breastfeed afterwards.

Some additional considerations for breastfeeding when the parent has been diagnosed with COVID-19:

  • Infants and children generally have been shown to have milder illness when sick with COVID-19 and have the lowest risk of death of any age group.
  • There is NO evidence that breastmilk itself can transmit COVID-19.
  • Masks and face coverings have been shown to significantly reduce respiratory droplets

Talk to a doctor, nurse, or lactation consultant if you have specific questions about your circumstances and breastfeeding during COVID-19 infection.


Back to Top ▲

Isolation & Quarantine Support Services

Please call 408-808-7770 to make a referral.
The referral hotline is available 7 days/week, 8 am – 5 pm.

PDF:  | English | Chinese | Spanish | Vietnamese | Tagalog​ |

Santa Clara County COVID-19 Support Team provides resources to County residents who test positive for COVID-19 or are identified as contacts to a positive case to enable them to isolate or quarantine safely. There are three main components to the program:  

The first component consists of a motel with supportive services for cases and contacts who cannot safely isolate or quarantine at home or who do not have a home. At this hotel, the County offers limited case management services, three meals per day and laundry services. Medical and behavioral health staff perform wellness checks weekly and connect individuals to social services, medical and behavioral health services based on their needs. Transportation to and from the motel to initiate or conclude isolation or quarantine can be provided. Once the isolation or quarantine period is complete, the Program staff assist participants to return to their homes or transition to appropriate and available congregate and non-congregate shelter settings. 

The second component provides support services for persons who can isolate and quarantine at home, but who need some assistance. The supportive services are similar to what is provided at the motel. Most participating households need help buying groceries and cleaning supplies. 

The *third component of the Program is rental and utility bills specifically for individuals and families participating in this Program. Each household may be eligible for up to $5,000. *Individuals must qualify based on income of 80% AMI (Area Median Income) or less. 

This service is available to individuals who have tested positive for COVID or have been exposed to COVID and need to isolate and quarantine due to exposure.  


Back to Top ▲

Contact Tracing Calls – What to Expect

Answer the call

As a community, we need each and everyone one of us to do our part to slow the spread and keep our community healthy.

Your privacy is incredibly important to us, and any information you provide will only be used by the Public Health Department to ensure the health and safety of our community. You will never be asked for your social security number, financial information, or immigration status.


Back to Top ▲

What happens when a contact tracer calls me?

You may receive a text and then a call from 916-262-7553 with the caller identity as “CA COVID TEAM.” This is our County of Santa Clara COVID Support Team trying to reach you. You can help protect your family and friends by answering the call.

The goal of the call is to make sure you have everything you need to safely stay home and prevent exposure to others.

If you have tested positive, our COVID Support Team will confirm your identity, ask you how you are feeling, and ask a few key questions to help us learn about your case. We will then ask you to think about where you have been in the 48 hours before your symptoms started up until now. If you have no symptoms, we will ask you to think back to the 48 hours before when your positive test was taken up until now. We will ask about the people that you were in close contact with may have been exposed.  We will let anyone that may have been exposed know that they have been exposed, while trying our best to keep your identity protected.

If you have been a close contact to someone during the period they are contagious, our COVID Support Team will confirm your identity and then notify you that you have been exposed to COVID-19. We will provide information about when the exposure happened but not how or to whom, so that we can protect the identity of the person who was ill. We will answer your questions and advise that you be tested for COVID-19.

In order to stop the spread of the virus within your community, the most important thing you can do is answer our call and stay home if instructed to do so, either because you have tested positive and are currently contagious or because you have been exposed and could be contagious or become contagious soon. Our contact tracers are here to help you stay home safely and will talk to you about any help you need to stay home for the period we recommend.


Back to Top ▲

How do I know the call is real or a scam?

The call you receive will come from 916-262-7553, with a location as Sacramento. The Caller ID will say that it is the CA COVID Team calling you. When we reach you, we will say that we are calling from Santa Clara County and will verify your identity by asking your birthday. We do need to ask questions about where you have been and the people you have spent time with. 

The Santa Clara County COVID Support Team will never ask you for:

  • bank, credit card, or financial information;
  • money, gift cards, or money transfers;
  • Social Security numbers; or
  • immigration status.

If you want to double check that it is the Santa Clara County COVID Support Team calling you, you can hang up and call us back at 916-262-7553 to verify it is us calling. If you are using the number we called you on, you should be routed back to the contact tracer assigned to call you. You may also call us at 408-970-2870 to verify that the Public Health Department is trying to reach you. 


Back to Top ▲

Last updated: 3/4/2021 6:28 PM