Major Changelings (and presumably vampires) aren't immune to diseases

[Noah Buttes]

not only is this a "feature", it's also a fuckin BIG mood.

It's not a feature though.

See:
https://github.com/goonstation/goonstati...se.dm#L355

Code:

    if (ischangeling(src) || isvampire(src) || src.nodamage)
        //Vampires and changelings are immune to disease, as are the godmoded.
        //This is here rather than in the resistance check proc because otherwise certain things could bypass the
        //hard immunity these folks are supposed to have
        return null

and
https://github.com/goonstation/goonstati...n.dm#L5757

Code:

    if (ischangeling(src) || isvampire(src)) // Vampires were missing here. They're immune to old-style diseases too (Convair880).
        return 0