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Staphylococcus is a genus of Gram-positive bacteria in the family Staphylococcaceae from the order Bacillales. Under the microscope , they appear spherical ( cocci ), and form in grape -like clusters.
Staphylococcus spp., are Gram-positive bacteria, some of which cause suppurative disease processes in animals and humans. Of the over 40 species recognized at present (Table 1) 9, 15 only four (Staphylococcus aureus, S. epidermidis, S. pseudintermedius and S. hyicus) are significant in livestock.
Bacteria in the genus Staphylococcus are pathogens of man and other mammals. Traditionally they were divided into two groups on the basis of their ability to clot blood plasma (the coagulase reaction). The coagulase-positive staphylococci constitute the most pathogenic species S aureus.
3 ημέρες πριν · The term staphylococcus, generally used for all the species, refers to the cells’ habit of aggregating in grapelike clusters. Staphylococci are microbiologically characterized as gram-positive (in young cultures), non-spore-forming, nonmotile, facultative anaerobes (not requiring oxygen).
Staphylococci are gram-positive aerobic organisms. Staphylococcus aureus is the most pathogenic; it typically causes skin infections and sometimes pneumonia, endocarditis, and osteomyelitis. It commonly leads to abscess formation.
Staphylococcus aureus infections range from mild to life threatening. The most common staphylococcal infections are. However, the bacteria can travel through the bloodstream (called bacteremia) and infect almost any site in the body, particularly heart valves (endocarditis) and bones (osteomyelitis).
Staphylococcus is a genus of Gram-positive bacteria known for their spherical or grape-like clustered shape under a microscope. They are commonly found in various environments, including on the skin and mucous membranes of humans and animals.
