All staff members who came in contact with a colleague in Gov. Steve Sisolak’s office who tested positive for COVID-19 have completed quarantines and returned to work, according to aides to the governor on Thursday. None of the other staffers tested positive during the quarantines that began about two weeks ago. All received a negative test result before returning to the office in Carson City. governor’s office hasn’t identified the person on Sisolak’s staff who tested positive on Oct. 6 after developing symptoms the previous weekend and was last in the Capitol office on Oct. 2.