Wirh reference to the MV Hondius cruise ship, to contract the Andes virus one needs to inhale mouse (rodent) poopdust. What have they done or where have they camped, and how come they never noticed it? This expedition afaik occurs often and the crew is almost one for each passenger. I don’t get it, this virus is quite well known in Argentinian Andes region.

So I guess a tourist did stupid tourist things probably, or a passenger got it from a local (guide)'and injected the other passengers, is my guess.