Which flea is known to transmit the plague?

The Oriental rat flea is recognized as the primary vector responsible for the transmission of the plague, specifically the bacterium Yersinia pestis, which is the causative agent of this disease. These fleas typically infest rats, which can carry the bacteria and serve as a reservoir for the plague. When an infected flea bites a mammal, such as a human, it can transmit the bacteria, leading to infection.

In historical contexts, such as the Black Death in the 14th century, the Oriental rat flea played a critical role in the spread of the disease, highlighting its significance as a public health concern. While other fleas, such as the cat flea, dog flea, and human flea, can be pests and may harbor other diseases, they are not known to transmit the plague. Understanding the specific roles of different flea species in disease transmission is essential for effective pest control and public health strategies.