Posted on 01/31/2020 9:25:16 AM PST by mykroar
This doesn’t sound like flu. Instead my first guess would be the “cruise ship disease”, Norovirus.
https://en.wikipedia.org/wiki/Norovirus
First of all it is extremely contagious, and it *commonly* involves diarrhea and vomiting, unlike flu where typically only young children show those symptoms.
Notable Norovirus outbreaks on cruise ships
https://www.floridatoday.com/story/news/2019/01/11/norovirus-outbreak-cruise-ships/2547721002/
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