I think we need more than one person actually doing the infecting, though we can still have just one bad guy. Imagine if twenty people want to be "initially" infected - that's a heck of a lot to dump on poor Morrigan if she's got twenty excited people all wanting a post from her NPC!
Disease spread - I like the idea of it being spread by physical contact or at least closeness rather than being airborne. If it's purely airborne then everyone will get it just from being in the room. The same virulence of a standard cold virus should be reasonable I think. That would also take two or three days for the first people to show up, and of course others can get it from that.
A cure - I would say they have a cure for one strain, but it isn't particularly effective and needs to be worked on. This gives those playing healers the chance to come up with something interesting and play out finding a cure if they want to.
New strain - see above. I am wondering about
this as a disease we can work from. Little is known about it so we can add other symptoms. Personally I like the idea of coughing up something in the advanced stages, but something funny like glitter or daisies. Imagine instilliing a fear of glitter or daisies into the wizarding community! Plus I would also love to see one of the symptoms as temporary loss or weakening of magical ability. Imagine the panic! Everytime someone gets a spell wrong they don't know if its normal or if they're coming down with the disease!
symptoms - see above. Plus whatever else we can think of!
