"As some of you may have heard, Ozzy was admitted to hospital following some complications from the flu. His doctors feel this is the best way to get him on a quicker road to recovery. Thanks to everyone for their concern and love," Sharon wrote.
Her update comes a week after Ozzy, 70, officially canceled the European leg of the No More Tours 2 tour on January 30.
His team made the announcement on Facebook.
"This follows yesterday’s announcement that OSBOURNE was postponing the first four dates of the tour because of the flu. After seeing his physician again, OSBOURNE has been diagnosed with a severe upper-respiratory infection which the doctor feels could develop into pneumonia given the physicality of the live performances and an extensive travel schedule throughout Europe in harsh winter conditions," the statement read.
This marked the second time in four months the singer had to pull the plug on his tour. In October, he had to cancel the end of the North American leg for a staph infection.
A frustrated Ozzy gave his own statement to fans after canceling the second time around. "I’m completely devastated for having to postpone the European leg of my tour. It just seems that since October everything I touch has turned to s**t. First the staph infection in my thumb and now coming down with the flu and bronchitis.”