Thank you It's a common transmission type, yep, but there are others, so I feel a bit 'just my luck...'. With vectors, yes, but also, one big one would be contaminated water. I'm actually thinking I may switch to a disease spread by contaminated water. I don't even need a 100% clear explanation as my characters have no way to know for sure; but I still want to write something realistic so my readers can guess if they want.
Also some are more hard on children, or specific professions etc. also, not all epidemics necessitate to stop international travel (which also happens in my story, as well as other specifics in common with the current situation, but I should stop spoiling so much ) It's the addition of similar aspects that makes me uncomfortable. I guess I'll try to change as many characteristics as possible (the ones that don't impact the story too bad), and focus on the consequences.