Changlings can catch diesases

[Sundance]

If you were a ling and you *consumed somebody, then you deserved it.
If you were a ling and you absorbed someone with kuru and thus got kuru yourself, then that is amazing and should probably not be fixed.

Improved that a bit.

Yeah actually although it may be bug, it's quite charming that a ling gets poisoned from his own food.

Maybe if hipbee gave more clarity on how he actually got the disease...