Andes virus is a member of the hantavirus family responsible for the MV Hondius cruise ship outbreak.
The only vaccine against hantaviruses in use is Hantavax which targets Hantaan river virus and Seoul virus, both "old world" hantaviruses, causing different symptoms than "new world" hantaviruses like the Andes virus (https://en.wikipedia.org/wiki/Hantavirus_vaccine)
Moderna has been working on mRNA hantavirus vaccine, though this seems to target old world hantaviruses as well:
Resolves YES if any officially sanctioned vaccine trial in humans occurs before close date, where:
the vaccine has preclinical data suggesting possible efficacy against Andes virus
the trial has testing efficacy against Andes virus among its goals
The results of the trial are not relevant for resolution.
I will not bet on this market.
1,000