head picture
Staphylococcus aureus colonies on blood agar, beta-hemolysis
microscope picture Gram-positive cocci

Staphylococcus aureus

Staphylococcus aureus, Columbia agar with 5% defibrinated sheep blood. Cultivation 24 hours, aerobic atmosphere, 37°C. Colonies are surroundend by a wide zone of beta-hemolysis.

Staphylococcus aureus is frequently part of the skin flora found in the nose and on skin. About 20% of the human population are long-term carriers of S. aureus.
S. aureus can cause a range of illnesses from minor skin infections, such as pimples, impetigo, boils (furuncles), cellulitis folliculitis, carbuncles, scalded skin syndrome, and abscesses, to life-threatening diseases such as pneumonia, meningitis, osteomyelitis, endocarditis, toxic shock syndrome (TSS), chest pain, bacteremia, and sepsis. Its incidence is from skin, soft tissue, respiratory, bone, joint, endovascular to wound infections. It is still one of the five most common causes of nosocomial infections, often causing postsurgical wound infections.
Text: Wikipedia
Gram-positive cocci, nonmotile, tend to be arranged in grape-like clusters.