Malaria ...
Several things could be causing his symptoms..appendix, gallstones etc.
Hopefully, he’s just being overly cautious. I know I would be! If I went into that apt. & later got any type of symptoms, I’d be freaking out. His poor family must be too..
A friend of mine just got over malaria. He returned from a missionary trip to Papua New Guinea and a week or so later came down with malaria. It was touch and go for a while. The local hospital had no medicine and had to treat him with quinine, the centuries old medication treatment until modern medicines could be procured...............