Earlier this year, Charles tested positive for COVID-19. The British royal contracted the disease in late March, but only experienced "mild symptoms." In a June interview, he said that having had COVID-19 inspired him to be an outspoken advocate of ways to help make sure the world doesn't experience another pandemic.
"Yes, it makes me even more determined to push and shove and shout and prod, if you see what I mean. Whatever I can do behind the scenes sometimes," he told Sky News before adding of his own experience with coronavirus, "But yes, but I suppose it did, partly, and I was lucky in my case. I got away with it quite lightly."
Charles' life, as well as his family's, will continue to be told in the fourth season of The Crown, out Sunday on Netflix. ET spoke with Josh O'Connor about playing Charles and the hardships that he endured growing up as a royal.