Sos ILA- foodborne illness Flashcards
most common cause of inflammation of small intestine
infectious enteritis (food poisoning)
poor hygiene, improper food handling, meat processing and improper cooking causes of what
infectious enteritis
main sx’s of food poisoning
diarrhea
vomiting
fever
2 pathogens that cause infectious enteritis within hours
S. aureus
C. perfringens
onset of sx’s within hours
Enterotoxins bind directly to MHC class II and lead to a massive increase in T cell activation
S. aureus
gram + cocci in clusters
catalase +; coagulase +
can cause toxic shock syndrome and scalded skin syndrome
S. aureus
onset of sx’s still within hours up to 16
gram + rod
can cause gas gangrene and food poisoning
C. perfringens
Enterotoxins bind claudin proteins in the tight junction causing enterocyte apoptosis or oncosis (swelling then necrosis)
C. perfringens pathophys
food poisoning sx’s occur within hours to days with what pathogen
C. botulinum
Listeria
Norwalk virus
onset of sx’s 12-72 hrs
gram + rod spore former
cleaves SNAP-25 and prevents Ach from being released
C. botulinum
can cause floppy baby if they ingest honey
C. botulinum
gram + rod
spore forming
cause of pseudomembranous colitis
C. difficile
gram + rod
beta hemolytic
catalase +
facultative anaerobe
listeria
can get food poisoning from this pathogen from soft cheeses and unwashed produce
Listeria
Mediates its own uptake into cells and spreads from cell to cell and secretes factors that alter protein synthesis (facultative anaerobe)
Listeria