Without seeing a photo, it would only be guessing as to a virus on your adenium. More than likely it was cultural conditions that plays a role in what your adenium looks like. Improper care, location, soil mix, any one or all of the above. A virus is obvious to the semi educated/trained eye.

I doubt a virus that effects adeniums can casually effect another species nearby. Viruses on adeniums are usually passed through careless grafting techniques.

randy

Was in a hurry a few minutes ago. Left off insect/pest as a potential problem with your plants. Have you looked at them closely?

randy

No pests. No reason for ten year old jade to up and die - no changes out of the ordinary for it. I have since purchased another desert rose - showing no signs of disfigured leaves, but will give it a little more time under same conditions as the other.