Pasteurella pestis

Pasteurella pestis is a bacterium that causes the infectious disease known as plague, primarily transmitted through bites from infected fleas or contact with infected animals. It can result in severe illness, characterized by symptoms like fever, swollen lymph nodes, and in more extreme cases, can progress to pneumonia or septicemia. Historically, the plague has caused significant pandemics, notably the Black Death in the 14th century. Today, while rare, plague cases still occur, particularly in rural areas where it is present in wildlife. Effective treatments exist, including antibiotics, if administered promptly.