*pokes* 
Heheheh...
Okay, actually not much more I can add aside from my post in the linked question. The Victory Ball was for students and adults from all three schools and areas, so there were BB and Durm kids there as well. The ex-DE who created the disease was pretty much insane and already had some other kind of sickness, as I recall, so he basically was trying to kill off purebloods and take as many with him as possible, his reasoning being that if purebloods were still alive and not in prison, they clearly had been supporting the wrong side (I did say he was crazy). So muggle family members would basically have been immune.
A couple of played characters did die as a result, including students, and some people were affected by the symptoms for months afterwards. Symptoms came on quickly and initially resembled flu, though if anyone wanted to come up with other symptoms they fancied playing out we ran with that as well. Initially people would have gone to the hospital wing and then been transported to St Mungo's. I guess Poppy probably uses some sort of modified shield charm (as, I imagine, healers of contagious diseases might, kind of like a vaccination?) to make sure she doesn't catch anything contagious from the students she looks after which would account for her being able to take care of them without dying herself? Sam Dickinson, being deputy head, ended up pretty sick because he refused to go to the hospital wing and instead made arrangements for people to be moved, anyone uninfected to get portkeys out of Hogwarts etc. I seem to recall that for the most part, people who were less severely affected and got treatment quickly made a full recovery without side effects.
And...I think that's about it? Pretty sure they never found out who was responsible either, but I'm not 100% on this!