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Isolation and Quarantine

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Quarantine, Isolation, and Vaccination Calculator

Use our new COVID calculator to know when you are considered fully vaccinated, when and how long you need to quarantine, reinfection timeframes and more.

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If you have tested positive for COVID-19, it may take several days before you receive a call from MMDHD. In the meantime, please:

  • Isolate at least 10 days from the onset of symptoms. If you have no symptoms, isolate for 10 days from the date of your positive test. After 10 days, you may end isolation if it's been 24 hours with no fever without the use of fever-reducing medications and your COVID-19 symptoms (cough, shortness of breath, etc.) have improved.
  • Notify your close contacts. Someone with COVID-19 can spread the virus beginning 48 hours (two days) before symptoms start or 48 hours (two days) before testing positive.

• Alert: COVID-19 Positive Self-Reporting Form: Click Here to Complete

Isolation Guidance from MMDHD (5/4/21)
Important Information for those with COVID-19 (5/4/21)


If you have been identified as a close contact, it may be several days before you receive a call from MMDHD or Trace Force, a statewide notification system that partners with local health departments. In the meantime, follow these instructions:

  • You should self-quarantine for 14 days from your last contact with the COVID positive person.
  • While a 14 day quarantine is strongly recommended, it may be shortened to 10 days if you remain symptom free, and you continue to monitor yourself for symptoms for an additional 4 days.
  • If symptoms arise at any time during the recommended 14 day quarantine, get tested. Testing locations can be found at or by calling 211. If you test positive for COVID-19 you should follow home isolation guidelines (see above). If you have symptoms but test negative, you need to complete a 14 day quarantine.
  • Always follow guidance from your local health department or contact tracers.
  • Contacts of a contact do not need to quarantine but should monitor themselves for symptoms.
  • Proof of antibodies or a negative COVID-19 test result during quarantine will not reduce or end quarantine. The only people excluded from quarantine are those who have been infected with COVID-19 within the last 90 days or are fully vaccinated for two or more weeks prior to exposure. NOTE: determination of quarantine length and release from quarantine is determine by public health, not your individual healthcare provider. NOTE: There are exceptions to quarantine rules in the shool setting. For more information, see the "Modified Quarantine Guidance" document below:

Modified quarantine guidance from MMDHD 10-14-21

Quarantine Guidance from MMDHD (5/4/21)


Protect yourself and your community by stopping the spread of COVID-19. Download the app and get notifications if you may have been exposed to the virus.

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