Jack Osbourne has revealed that two of his daughters fell ill with Covid-19 after sharing a drink with a family employee.The 34-year-old son of Ozzy and Sharon Osbourne says that his daughter Minnie Theodora, two, and one of her sisters - either eight-year-old Pearl Clementine or five-year-old Andy Rose - had caught the virus.Jack shares the girls with his ex-wife Lisa Stelly, who he was married to from 2012 to 2018.Speaking on the pocast Pretty Messed Up, Jack spoke about how his girls likely caught the virus.He explained: "Someone who works for me went away, came back — and they didn't tell me they were going out of town, they just appeared and were like, 'Oh, yeah, we went out [of town].'"And my daughter picked up the drink that they set.