Like I said before, bath salts is just disinformation with the intent of making a joke out of the "zombie" attacks.

CDC silent on zombie-inducing parasites that live in human brains

A 2008 piece by Discover Magazine entitled, “Zombie animals and the parasites that control them,” named a single-cell parasite primarily found in cats, the Toxoplasma gondii — which alters the brain-chemistry of rats to make them more likely to seek out cats — as one such parasite.

The Toxoplasma “thus makes a rat more likely to be killed and the parasite more likely to end up in a cat — the only host in which it can complete the reproductive step of its life cycle,” Discover reported in a separate piece.

The parasite can also live in the brain cells of thousands of other warm-blooded animals, including humans. The Toxoplasma, when living inside humans, is linked to causing significant changes in behavior, including neuroticism, increased aggression and schizophrenia.

Is it possible that these "zombie" attacks are the result of a modified toxoplasma gondii rage pathogen bioweapon being used in field tests?

The U.S. government has routinely used without knowledge or consent used the general population in medical experiments, much of it in behavioral and mind control research.

U.S. Programs of Involuntary Human Experimentation