Gram Positive Bacteria Flashcards
What are the two separations of gram positive bacteria?
Bacilli and cocci
What are bacilli split into?
Aerobic and anaerobic
Give 2 examples of aerobic spore forming bacilli and what they cause
- Bacillus Cereus - food poisoning
- Bacillus Anthracis - Anthrax
Give 2 examples of non spore forming aerobic bacilli
- Listeria moncytogenes
- Corynebacterium Diptheriae
What does listeria monocytogenes cause?
- Meningitis in neonates
- Bacteraemia in pregnancy
What does corynebacterium diphtheriae cause?
Diptheria
Give 4 examples of the clostridium species (anaerobic spore forming bacteria)
- Clostridium difficile
- Clostridium perfringens
- Clostridium botulinum
- Clostridium tetani
What does clostridium difficile cause?
Diarrhoea
What does clostridium perfringens cause?
- Can cause food poisoning
- Gas gangrene
- Is found normally in faeces
What does clostridium botulinum cause?
Botulism
What does clostridium tetani cause?
Tetanus
What are the three subgroups of cocci?
- Staphylococci
- Streptococci
- Enterococci
What coccus demonstrates a positive coagulase test?
Staphylococcus aureus
What cocci demonstrate negative coagulase tests?
- Staphylococcus epidermis
- Staphylococcus saprophyticus
What does staphylococcus aureus cause?
- Found normally in the nose and skin
- Can cause endocarditis, osteomyelitis, food poisoning and toxic shock
Staphylococcus epidermis?
- Found everywhere on the skin
- Can infect catheters
Staphylococcus sapropyticus?
- Cause of UTI in women of child bearing age
What are streptococci separated into
Haemolytic and non haemolytic
What are haemolytic streptococci separated into
Partial (alpha) and non partial (beta) haemolytic streptococci
Give 2 examples of partial haemolytic streptococci
- Streptococcus pneumoniae
- Viridians streptococci
Streptococcus Pneumoniae
- Normal flora of upper resp tract
- Major cause of meningitis in children and elderly
Viridans Streptococci
- Normal flora of mouth cavity
- Can cause endocarditis.
Give 2 examples of beta haemolytic streptococci
- Streptococcus Pyogenes
- Streptococcus agalactiae
Streptococcus Pyogenes
- Sore throats
- Cellulitis
- Impetigo
- Post streptococcal sequelae can result in acute rheumatoid fever, glomerulonephritis
Give an example of a non haemolytic streptococcus
Enterococcus faecalis
What does enterococcus faecalis cause?
- Can cause UTI