Plague has been in the news from several areas in the much from world. The Center for Disease Control has become especially concerned about two aspects of plague (and these concerns affect veterinarians in Utah very directly); first, plague has been increasing in recent years in the western states and second, cats are being recognized more often as being associated with human plague cases.
Bagley, Clell, "Cat Plague - Veterinarian Caution" (1997). All Current Publications. Paper 426.