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Brucellosis [4] is a zoonosis caused by ingestion of unpasteurized milk from infected animals, or close contact with their secretions. [5] It is also known as undulant fever , Malta fever , and Mediterranean fever .
Human and animal brucellosis share the persistence of the bacteria in tissues of the mononuclear phagocyte system, including the spleen, liver, lymph nodes, and bone marrow. Brucella can also target the male reproductive tract. [7] Globally, an estimated 500,000 cases of brucellosis occur each year. [7]
Brucella suis is a bacterium that causes swine brucellosis, a zoonosis that affects pigs. The disease typically causes chronic inflammatory lesions in the reproductive organs of susceptible animals or orchitis, and may even affect joints and other organs. [1] The most common symptom is abortion in pregnant susceptible sows at any stage of ...
Brucellosis is a zoonotic disease: marine mammal brucellosis can infect other species, including human beings. Brucella spp. are gram-negative in their staining morphology. Brucella spp. are poorly staining, small gram-negative coccobacilli (0.5-0.7 x 0.6-1.5 μm), and are seen mostly as single cells
Brucella canis is a Gram-negative bacterium in the family Brucellaceae that causes brucellosis in dogs and other canids. It is a non-motile short-rod or coccus-shaped organism, and is oxidase, catalase, and urease positive. [1] B. canis causes infertility in both male and female dogs. It can also cause inflammation in the eyes.
Brucella abortus enters phagocytes that invade human and animal innate defenses which in turn, cause chronic disease in the host. The liver and spleen are the mainly affected areas of the body. [3] Farm workers and veterinarians are the highest risk individuals for acquiring the disease due to their close proximity to the animals.
The dominant answer is that the birds spread to where they're found today way back before the continents broke up. But DNA tests are starting to make the issue even more puzzling.
In this list of birds by common name 11,278 extant and recently extinct (since 1500) bird species are recognised. [1] Species marked with a "†" are extinct.