Kamala Harris cancels trips after two people linked to campaign test positive for COVID-19. Democractic vice presidential candidate Sen. Kamala Harris said she will cancel campaign events through the weekend after the campaign communications director and a non-staff flight crew member tested positive for COVID-19. Harris was not in close contact with either and is not required to quarantine but is canceling the events out of an abundance of caution, the campaign says. She will continue with virtual events. Ref. USAToday.