Causes plague. Yersinia pestis CA88-4125

Yersinia pestis CA88-4125. The CA88-4125 strain of Yersinia pestis is of great interest as it was originally isolated in Monterey County, California. This area is very close to San Francisco, where Y. pestis is first thought to have become established in native populations of rodents. Subsequent spread of plague to the rest of the western United States probably originated from this region. As such, comparisons of this strain to other North American Y. pestis strains should provide interesting insights into how Y. pestis mutated as it spread across the western United States.