Although the disease is less known outside tropical areas, in some cases travelers to regions where there is a risk of contracting it have become infected and brought the disease home with them.
Ehkki väljaspool troopikaalasid seda haigust eriti ei tunta, on juhtumeid, kus nakkusohtlikes piirkondades käinud turistid on nakatunud ja haiguse kodumaale kaasa toonud.