Noun
English Wikipedia has an article on:tropical diseaseWikipedia
tropical disease (plural tropical diseases)
(medicine) any infectious disease which occurs only, or more often, in tropical or subtropical regions
I had learned of Gertrude Stein's bon mot that medicine opened all doors. This prompted me, in different moods, to view my future life as literary psychiatrist, globe-trotting tropical disease specialist, or academic internist. Harold E. Varmus