Where does “フィーバー” come from?

フィーバー (Japanese) comes from English fever, from Middle English fever, from Old English fefer, from Latin febris, from Proto-Italic *feɣʷris, from Proto-Indo-European dʰegʷʰris, from Proto-Indo-European dʰegʷʰ- — to burn; warm, hot.

フィーバー (Japanese): fever, an elevated body temperature