Sorry when something lacks specificity I tend to trust instinct.
I am near certain players do because I have been diseased and the effects were NOT permanent, I got the con and vitality back afterwards.
I gotta experiment now, if I can remember who diseased us last time it happened. Now that I am fact-finding, I will never get lucky enough to be diseased again!
Ah, Irony and sarcasm my two favorite flavors.