Pasteurella multocida

Pasteurella is a genus of rod-shaped bacteria named after Louis Pasteur. These bacteria are gram-negative, nonmotile, and facultative anaerobes, meaning they do not require oxygen to survive. They are typically 0.3 to 1 micrometer wide and 1–2 micrometers long.1

Pasteurella multocida is a species within this genus that causes various diseases in animals, including fowl cholera and pneumonia in cattle. It is also responsible for "shipping fever," a common ailment in stressed animals, characterized by fever and respiratory issues that can lead to pneumonia. This bacterium can also infect humans through bite wounds from cats and dogs, as it is commonly found in their mouths. Treatment for pasteurelloses often involves antibiotics, rest, and isolation.12