God made Him who had no sin to be sin for us,
so that in Him we might become the
righteousness of God.
I Corinthians 5:21
Pneumonic plague is the only form of the disease that can be transmitted person-to-person, usually through infectious droplets from coughing.
The bacteria that causes plague occurs naturally in the western United States, primarily in California, New Mexico, Arizona and Colorado, according to the U.S. Centers for Disease Control and Prevention.