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

From Wikibooks, open books for an open world
< MCEM Part A Study Guide‎ | Microbiology
Jump to: navigation, search

Section 1: Streptococci and Staphylococci[edit]

Gram-positive cocci can be divided into two groups using the catalase test. Catalase catalyses the conversion of H2O2 to water and oxygen, causing bubbles. Staphylococci produce catalase and are therefore catalase-positive, whereas Streptococci are catalase-negative.

Streptococci[edit]

These are facultative anaerobes.

Streptococcus pneumoniae[edit]

Streptococcus pneumoniae in spinal fluid. FA stain (digitally colorized).

methods of spread of infection principal clinical features

Streptococcus pyogenes[edit]

methods of spread of infection principal clinical features

Staphylococci[edit]

Staphylococcus aureus[edit]

methods of spread of infection principal clinical features

Staphylococcus epidermidis[edit]

methods of spread of infection principal clinical features

Alpha-haemolytic streptococci[edit]

endocarditis procedural prophylaxis