Quarantining prevents the ongoing spread of the virus to other people by individuals who know they have been exposed or are likely to have been exposed, but do not yet know if they have been infected. It’s a precaution and an effective tool to prevent viral spread since people infected with COVID-19 can be contagious even without having symptoms.
If you are fully vaccinated:
and had close contact with someone who has COVID-19, you don’t need to quarantine after being exposed to someone with COVID-19, unless symptoms develop. However, you should get tested 5-7 days after exposure, even if you don’t have symptoms, and wear a mask indoors in public for 14 days following exposure or until your test result is negative. If you develop any symptoms of COVID-19 in the 14 days after exposure, you should get tested, even if you have a previous negative test.
If you are not fully vaccinated:
and had close contact with someone who has COVID-19, follow the instructions on how to quarantine to prevent further transmission. You should stay home for 14 days starting after the last day you were in close contact with a person who has COVID-19. You should not go to work or school and should avoid public places, and if possible stay away from other people you live with. Monitor your symptoms and watch for fever, cough, and/or shortness of breath.
Quarantine can end after Day 10 without testing if you do not have contact with high-risk individuals. Quarantine can end after Day 7 if you don not have contact with high-risk individuals and you test negative 48 hours before the last day of quarantine (day 5 or later). Daily monitoring, however, should continue for the full 14 days after the last close contact with a sick person.