The California Department of Public Health routinely tests various types of animals for evidence of infection by plague bacilli. The map displays data for 2004 for tests on carnivores, rodents, and pets.

Plague positives 2007

Plague positives 2006

Plague positives 2005

Plague positives 2004

In California, there are several fleaborne diseases associated with fleas. Probably the most important is plague. Active plague surveillance has been underway in the state for many years by the California Department of Health Services.

 

Photo credit Edman/McClelland collection