The claim about his health and the COVID-19 vaccine is consistent with a common conspiracy theory that spread online during the pandemic, falsely attributing numerous famous peoples' deaths to the vaccine. We have previously fact-checked such claims about Betty White, Lisa Loring and even Russian opposition leader Alexei Navalny.

Kelly Osbourne, the famous daughter of rocker Ozzy Osbourne, is speaking out after his death. Kelly, 40, posted an Instagram story with a black screen and a broken heart emoji, accompanied by the text "I feel unhappy I am so sad. I lost the best friend I ever had."

Before Ozzy Osbourne died on July 22 in Buckinghamshire, England, a "helicopter was dispatched to provide advanced critical care," a Thames Valley Air Ambulance spokesperson confirmed to PEOPLE in a statement.

Osbourne died on Tuesday at 76, just weeks after he and Black Sabbath performed at their farewell Back to the Beginning concert earlier in July.

Longstanding rumours of a beef between Ozzy Osbourne and Ronnie James Dio – the man who replaced him in Black Sabbath – have been shot down by former Sabbath drummer Vinny Appice. When Sabbath fired Ozzy in 1979 and replaced him with Dio, Osbourne would have been forgiven for holding a grudge against the new man in the band that he loved.

As the rock world and fans alike mourn Ozzy Osbourne's death at age 76, some of his peers teamed up to pay tribute.

There may be news about the death of Ozzy Osbourne. Just days after the passing of the Prince of Darkness, the most comprehensive Italian biography dedicated to him returns to bookstores.

The chemistry Ozzy Osbourne had with his beloved guitarist, Randy Rhoads, was undeniable, but their incredible collaborative relationship came to an end with a fiery tragedy that claimed three lives