“Here I am, just arrived in Milano, and I have tested positive for the second time in a month for Covid,” the caption read alongside photos of him at the airport. “So I had to go to the hospital. Thank you all for your support #sohappyithurts.”
In October, Adams had to withdraw from a performance at the Rock and Roll Hall of Fame Presentation after he tested positive.
That version of the famous calendar includes pictures of several stars including Cher, Iggy Pop, Jennifer Hudson and Normani.
CNN has reached out to a representative for Adams for comment.