A good nights sleep, a disease that was eradicated but still alive in labs, are there any others?

Hmmm, perhaps I better fill in a few gaps.
[Inkspot 1] 'It' is associated with one country - but didn't always stay there. 'It' might be there now, or spread around more than one country - I don't know 'its' exact whereabouts at this moment.
[Inkspot 2] 'It' has a name and I'd be surprised if anyone here had not heard of 'it'.
[BtD 1] No.
[BtD 2] No.
[Raak] No. But at least someone is starting to think around the "not 2 legs" bit.
[Chalky] No.
[Inkspot 3] No.

I think it is the existence thing that may cause confusion (it confuses me). 'It' no longer exists in a similar way to the last MC pilg not existing any more.