Brucella abortus is a Gram-negative bacterium in the family Brucellaceae and is one of the causative agents of brucellosis.

[2] Brucella abortus enters phagocytes that invade human and animal innate defenses which in turn, cause chronic disease in the host.

[3] Farm workers and veterinarians are the highest risk individuals for acquiring the disease due to their close proximity to the animals.

Once symptoms begin to show, the host will be sick anywhere from 5 days to 5 months, depending on the severity of illness.

A few of the symptoms of brucellosis include: fever, chills, headache, backache, and weight loss.

[9] When cattle have stillbirths and are carrying this disease, other animals nearby can get infected if they ingest it or otherwise come into contact with fluids containing the bacteria.

In humans, it can be caught after noticing signs and the correct tests to determine the type of bacteria.