This episode contains strong language. Ivan Agerton of Bainbridge Island, Wash., was usually unflappable. A 50-year-old adventure photographer and former marine, he has always been known to be calm in a crisis. Soon after testing positive for the coronavirus this fall, he began experiencing psychosis. He spent Christmas in a psychiatric ward. Today, we hear from Ivan and look at the potential long-term neurological effects of the Covid-19.