Gram Positive Bacteria Flashcards
Characteristics of staphylococcus
Catalase +
non-spore forming
non-motile
Most are encapsulated
S aureus causes which two toxins
Exfoliatin toxin= blistered and peeling skin
Enterotoxin=Gut. associated with food poisoning. Super antigen.
___ is the most common cause of bacterial keratitis in the northern US
Staph Aureus
Hordeolum associated with which two bacteria
Gram positive staph aureus and staph epidermidis
Characteristics of Streptococcus
Catalase negative
Non spore forming
Non motile
Most are non-pathogenic.
Which bacteria is associated with endopthalmitis (infection of intraocular fluids)
Strep pneumoniae
Preseptal cellulitis. What is it and which bacteria cause it?
Staph aureus, Strep pneumoniae, strep progenies
Tissue inflammation in front of orbital septum. Swollen eyelids, but pupils and EOMS are normal.
E. Faecalis and faecium are commensals where
GI
Associated with UTI, bacteremia. Very resistant to antibiotics.
Characteristics of bacillus
Spore forming rods
Catalase positive
Soil dwelling
Two toxins produced by bacillus cereus
Enterotoxin- things undercooked.
Friend rice syndrome: Cereulide toxin. Things left out.
What roles do the anthrax toxin play
Protective agent. Prevents the bacteria from being broken down.
Lethal factor
Edema factor. Shock, drop in BP.
“other” bacteria. Not rod or coccus
Corynebacterium diphtheria.
-Causes necrosis of oropharynx tissue and pseudomembrane.
Actinomyces Israeli.
Filamentous bacteria commensal to oral cavity.
may cause canaliculitis.
What bacteria can cause canaliculitis?
Actinomyces israeli.
Does Tb double slow or fast
SLow.
Predisposing factors of Tb
Poverty
HIV infectinon
Immunosuppression
