Plague is endemic in

Plague is endemic in

• A. The Eastern U.S.
• B. The Western U.S.
• C. Australia, Northern Europe, and Mexico
• D. Both B And C

Answer: (B)

Plague persists in nature through enzootic cycles involving wild rodents and fleas, with certain regions maintaining these cycles year after year. In the United States, these stable cycles are most clearly established in the western states, where prairie dogs and other ground-dwelling rodents host flea vectors that continuously carry Yersinia pestis. This regional pattern means human cases are more likely in the West, while the Eastern U.S. does not sustain long-term enzootic foci, and Australia, Northern Europe, and Mexico do not maintain persistent plague cycles under typical conditions. So, the area where plague is endemic is the Western United States.

Plague persists in nature through enzootic cycles involving wild rodents and fleas, with certain regions maintaining these cycles year after year. In the United States, these stable cycles are most clearly established in the western states, where prairie dogs and other ground-dwelling rodents host flea vectors that continuously carry Yersinia pestis. This regional pattern means human cases are more likely in the West, while the Eastern U.S. does not sustain long-term enzootic foci, and Australia, Northern Europe, and Mexico do not maintain persistent plague cycles under typical conditions. So, the area where plague is endemic is the Western United States.