If someone in your household is told to quarantine because they’ve been exposed to COVID-19, you should quarantine as well. This is especially true if you’ve been in close contact with that person. It’s possible for you to have the virus even if you don’t have symptoms.
Quarantine should last 14 days from your last close contact with this person in order to see whether you develop symptoms. Limit close contact with others as much as possible (stay at least 6 feet apart) and avoid having any unnecessary visitors, especially people who are at high risk of severe illness.
If you have questions, contact your healthcare provider for additional information.