MCEM Part A Study Guide/Microbiology/Specific Pathogen Groups/Streptococci and Staphylococci

Section 1: Streptococci and Staphylococci

Staphylococci and Streptococci are Gram positive cocci. Staphylococci are catalase-positive, while streptococci are catalase negative (catalase catalyses the conversion of hydrogen peroxide to water and oxygen - catalyse test - H2O2 bubbles).

Streptococci

Streptococcus pneumoniae

methods of spread of infection principal clinical features

Streptococcus pyogenes

methods of spread of infection principal clinical features

Staphylococci

Staphylococcus aureus

methods of spread of infection principal clinical features

Staphylococcus epidermidis

methods of spread of infection principal clinical features

Alpha-haemolytic streptococci

endocarditis procedural prophylaxis