I just returned from Cuba. Last Tues. eve I felt ill, vomited felt better. In the night I awoke & shivered for 1/2 hr. I dressed warmly returned to bed. In the morning I had broken a sweat, felt well & had a good day. by evening I started sleeping whenever I could, no food, a bit of fresh juice. After 3 days slowly resumed eating again. Slight drippy nose & cough. Still week and feeling slightly off or drugged. Any guesses? No symptoms of Zika or Dengue.