Suggest Treatment For Joints And Body Pain, Headaches And Fatigue

My significant other (66 year old male) who is visiting the Caribbean was told by a local doctor there that he may have Zika. They would not do a blood test to confirm because they reserve the limited supply they have for pregnant women only. He has been symptomatic for over 2 weeks. Complete body aches, joint aches, headache and fatigue, NO fever or rash. (He is unable to even turn a door knob). To my knowledge these symptoms sound more like Dengue or Chikungunya. If it is Zika when is he most infectious. If a mosquito were to bite him (after his infectious stage) and that mosquito bit another person of child bearing years could she become infected with Zika? He has been there for 3 weeks and will be returning Dec 5th. Does this need to be reported to the CDC when he returns? Thank you for your time.