Another Duncan?
I was on board last month for a flight from ATL to San Antonio when at the last minute before the door shut, a man boarded and took a seat two rows ahead of us. We clearly thought he was from Africa. Once we were airborne, the stewardess called for any medical personnel onboard to assist this man as he was having a severe health issue. A female professional came forward and assisted him during much of the flight.
Even though this was a couple of weeks before Mr. Duncan, I knew about the devastating pandemic in Africa and Dr. Brantley had been in the news, etc... Let me just say that I was a little anxious, but not freaked out. We heard through other passengers that he was passing a kidney stone, (poor dude). Medical personnel removed him from the airplane before anyone else disembarked.