do i have to have another covid19 test, proving that i am negative, before i return to work?

ingaba kufanele ndenze olunye ingaba kufanele ndenze olunye uvavanyo lweuvavanyo lwecovid19covid19 , ukuba , ukuba iziphumo zithi andinayo,iziphumo zithi andinayo,phambi kokuba ndibuyelephambi kokuba ndibuyeleemsebenzini?
