Staphylococcus aureus
Prof Shahina Yasmin
, LOs
• Relate the important morphologic and biochemical
characteristics of Staphylococcus aureus with the lab
diagnosis.
• Explain the role of virulence factors in pathogenesis of
Staphylococcus aureus infections
• Relate the pathogenesis of diseases caused by
Staphylococcus aureus with their clinical features
• Explain the impact of Methicillin resistant
Staphylococcus aureus (MRSA) infections on clinical
outcome of Antibiotic Stewardship in patients.
, Cocci – Morphology, Classification and
identification
• Cocci: Spherical bacteria
• Classified on the basis of gram Staining
• Gram positive cocci
– Staphylococci – seen as clusters on stained slide 61
species, Catalase positive
– Streptococci – short or long chains, Catalase negative
– Enterococci
– Anaerobic gram positive cocci
• Gram negative cocci
– Neisseria
Prof Shahina Yasmin
, LOs
• Relate the important morphologic and biochemical
characteristics of Staphylococcus aureus with the lab
diagnosis.
• Explain the role of virulence factors in pathogenesis of
Staphylococcus aureus infections
• Relate the pathogenesis of diseases caused by
Staphylococcus aureus with their clinical features
• Explain the impact of Methicillin resistant
Staphylococcus aureus (MRSA) infections on clinical
outcome of Antibiotic Stewardship in patients.
, Cocci – Morphology, Classification and
identification
• Cocci: Spherical bacteria
• Classified on the basis of gram Staining
• Gram positive cocci
– Staphylococci – seen as clusters on stained slide 61
species, Catalase positive
– Streptococci – short or long chains, Catalase negative
– Enterococci
– Anaerobic gram positive cocci
• Gram negative cocci
– Neisseria
