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Sheep and goats are both small ruminants with cosmopolitan distributions due to their being kept historically and in modern times as grazers both individually and in herds in return for their production of milk, wool, and meat. [1] As such, the diseases of these animals are of great economic importance to humans.
Orf is a zoonotic disease, meaning humans can contract this disorder through direct contact with infected sheep and goats or with fomites carrying the orf virus. [6] It causes a purulent-appearing papule locally and generally no systemic symptoms.
The disease was initially known as jaagsiekte [jɑːχˈsiktə], a word derived from Afrikaans, meaning "chasing sickness", so called because animals are in respiratory distress as if they are out of breath from being chased. [6] It has also been known as sheep pulmonary adenomatosis and ovine pulmonary carcinoma. [7]
C. pseudotuberculosis causes a disease known as caseous lymphadenitis that most commonly affects small ruminants, such as goats and sheep. [9] [10] The disease often presents with pyogranulomatous abscess formation. [11] Abscessation can occur in numerous areas, but it most commonly affects the cutaneous region and superficial lymph nodes.
Four species infect humans: B. abortus, B. canis, B. melitensis, and B. suis. B. abortus is less virulent than B. melitensis and is primarily a disease of cattle. B. canis affects dogs. B. melitensis is the most virulent and invasive species; it usually infects goats and occasionally sheep. B. suis is of intermediate virulence and chiefly ...
Birds and humans have different ... causing mild cases in over 50 people. Those human infections raised concerns about the capability for bovine-to-human (or even human-to-human) transmission ...
Listeriosis is an infectious but not contagious disease caused by the bacterium Listeria monocytogenes, far more common in domestic animals (domestic mammals and poultry), especially ruminants, than in human beings. It can also occur in feral animals—among others, game animals—as well as in poultry and other birds.
A new study by biologists from the Scripps Research Institute shows that a bird flu virus is just a single mutation away from having human-ready receptors.. If the H5N1 virus does make the switch ...