This actually happened to my friend who also studies medicine but in another city.
So she was just doing her peds rotation and she got this little girl with unexplained high fever, splenomegaly, back pain, fatigue etc.
After few days she got all better and went home.
About month later she was back, fevers.
Nobody asked the mom about travelling. She have seen several doctors, specialist and few medstudents. And my friend asked the one question
Did u travel anywhere in the past?
And apparently the whole family went on vacation in summer to south of Italy. The girl got malaria.
We live in central Europe but damn this shows we really gotta think about everything. Also one other thing
Properly taken history is half of the diagnosis
It probably was an airport transmission. Like if I didn´t hate flying before this