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bovine actinomycosis, 3-year-old bull, 2-month evolution bony swelling of the right maxillae thick matter (top) and old fistulous granulomas. Actinomycosis is an infection caused by a bacterium of the genus Actinomyces, usually Actinomyces bovis; the disease it causes has several common names. When it is a moveable tumour or lump on the jaw ...
A. bovis is one of the few Actinomyces species considered to have some economic impact, [9] though this impact is considered minimal because it is not typically transmitted between animals within a herd and affected animals are often culled. In Ethiopia, actinomycosis accounted for 1.34% of condemnations. [28]
Many Actinomyces species are opportunistic pathogens of humans and other mammals, particularly in the oral cavity. [7] In rare cases, these bacteria can cause actinomycosis, a disease characterized by the formation of abscesses in the mouth, lungs, or the gastrointestinal tract. [2]
For example, the human body louse transmits the bacterium Rickettsia prowazekii which causes epidemic typhus. Although invertebrate-transmitted diseases pose a particular threat on the continents of Africa, Asia and South America, there is one way of controlling invertebrate-borne diseases, which is by controlling the invertebrate vector.
Actinomycosis is a rare infectious bacterial disease caused by the gram-positive Actinomyces species. [1] The name refers to ray-like appearance of the organisms in the granules. About 70% of infections are due to either Actinomyces israelii or A. gerencseriae. [1] Infection can also be caused by Streptomyces somaliensis and Propionibacterium ...
A. viscosus causes periodontal disease in animals and has been isolated from human dental calculus and root surface caries, as well as the oral cavity of hamsters and actinomycotic lesions in swine, cats, and dogs. [3] [4] Furthermore, it has been shown to cause endocarditis in humans. [5]
Farmer's lung occurs because repeated exposure to antigens, found in the mold spores of hay, crops, and animal feed, triggers an allergic reaction within the farmer's immune system. [5] The defense mechanisms of the body present as cold and flu-like symptoms that occur in individuals who experience either acute or chronic reactions.
Dermatophilus congolensis is a Gram-positive bacterium and the cause of a disease called dermatophilosis (sometimes called mud fever) in animals and humans, a dermatologic condition that manifests as the formation of crusty scabs containing the microorganism.