Man… what good can come from a place where we’re mixing Fauna and Flora from different planets and continents? That’s right, the next big virus will come from this biological bomb called Oasis/Ecodome…
Ve’nari has been working on this project for longer than you’ve been alive.
I assure you she’s thought of everything that could go wrong and has a contingency.
I feel like if this whole disease thing was an actual concern, we woulda seen it in all the bajillion other times different planets races interacted. Orcs, Draenei, Demons, Old Gods, that time we hung out in the house of plagues, the list goes on.