Why do you reply to him? Why do you give him the attention he craves? He actually isnt the problem. Its people like you who allow him a platform to air his broken record stance of "Me,myself and I will do what i want. I have Aspergers so i can do what i like" that fuel the issue. Like a fire when the oxygen is removed, he would fade away if not given the attention.
Unless you enjoy the drama too?
With his vaccination now obtained he can return to his normal life again..?