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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]
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.
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 ...
Humans can become infected if they have contact with an infected animal or its byproducts. Animals acquire B. melitensis by venereal transmission. [1] The organism is found in blood, urine, milk, and semen. [1] It is zoonotic, unlike B. ovis, causing Malta fever or localized brucellosis in humans. Brucella melitensis colonies growing on agar
Avian influenza, also known as avian flu or bird flu, is a disease caused by the influenza A virus, which primarily affects birds but can sometimes affect mammals including humans. [1] Wild aquatic birds are the primary host of the influenza A virus, which is enzootic (continually present) in many bird populations. [2] [3]
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.
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