Sharon Osbourne is in quarantine at home after her granddaughter caught coronavirus.The 67-year-old TV star - who has previously battled colon cancer - filmed her appearance on US panel show The Talk over video link on Monday (September 21) where she revealed her youngest granddaughter MInnie, two, had been diagnosed with COVID-19.Osbourne said: "I was meant to be in the studio, I was so looking forward to it."And then, unfortunately, one of my granddaughters has come down with Covid.