Deadly Assault with a Virus
Towleroad has a really good article on HIV as Aggravated Assault.
My two cents? If an HIV+ person is knowingly trying to spread his or her disease, then he should be prosecuted under the law. But if someone is having unprotected sex and not aware of the risks inherent in unprotected sex - risk of disease, risk that one or the other partner may not know or may be lying about his status - then I honestly believe that that someone is probably too naïve to be having sex at all.