Whitehouse Centers for Disease Control and Prevention US Department of Homeland Security - Federal Emergency Management Agency

I was around someone who has COVID-19, and my COVID-19 test came back negative. Do I still need to quarantine for 14 days after I was last exposed?

Yes. You should still self-quarantine for 14 days since your last exposure. It can take up to 14 days after exposure to the virus for a person to develop COVID-19 symptoms. A negative result before end of the 14-day quarantine period does not rule out possible infection. By self-quarantining for 14 days, you lower the chance of possibly exposing others to COVID-19.

Last updated September 03, 2020
Source: Centers for Disease Control and Preventionlinks to external site

See also: Prevent getting sick, Spread and transmission