ハバナ症しょう候こう群ぐんMeanings1nounHavana syndromemedicineA medical term for a set of unexplained symptoms reported by American embassy staff, first noted in Havana.ハバナ症しょう候こう群ぐんの原げん因いんはまだ解かい明めいされていない。The cause of Havana syndrome has not yet been clarified.