Which organism serves as the primary reservoir for plague?

Which organism serves as the primary reservoir for plague?

• A. Domestic cats
• B. Wild rodents
• C. Domestic dogs
• D. Infected ticks

Answer: (B)

The primary reservoir for plague is wild rodents. This is because the bacteria that cause plague, Yersinia pestis, primarily live in these wild rodent populations. The infection is typically transmitted to humans through fleas that have fed on these infected rodents. Therefore, when wild rodent populations are present, the risk of plague transmission increases, as these animals can harbor the bacteria without showing symptoms of the disease. While domestic cats and dogs can become infected with plague and may pose a risk for transmission, they are not the primary reservoirs; their role is more about being incidental hosts. Infected ticks can carry the plague bacteria, but they are not considered a primary reservoir like the wild rodent populations are. Understanding these host dynamics is crucial for effective public health interventions and for controlling plague outbreaks.

The primary reservoir for plague is wild rodents. This is because the bacteria that cause plague, Yersinia pestis, primarily live in these wild rodent populations. The infection is typically transmitted to humans through fleas that have fed on these infected rodents. Therefore, when wild rodent populations are present, the risk of plague transmission increases, as these animals can harbor the bacteria without showing symptoms of the disease.

While domestic cats and dogs can become infected with plague and may pose a risk for transmission, they are not the primary reservoirs; their role is more about being incidental hosts. Infected ticks can carry the plague bacteria, but they are not considered a primary reservoir like the wild rodent populations are. Understanding these host dynamics is crucial for effective public health interventions and for controlling plague outbreaks.