Food poisoning Flashcards
norwalk virus
associated with cruise ships self limited diarrhea for 2-3 days without skin lesions
cruise ship diarrhea
norwalk virus it survives chlorination and other forms of disinfection
Bacillus or cereus food poisoning.
toxins are found in fried rice and associated with food poisoning. self limited rapid onset of nausea and vomiting and lasts for 1-6 of ingestion diarrhea may occur later in the dx and it rarely causes sepsis as seen in patient.
diarrhea and abdominal cramping, ingestion of preformed toxin in starchy foods like rice
Bacillus cereus
vomiting, abdominal pain, diarrhea is not typical but can occur caused by preformed toxin and rapid onset of symptoms
staph aureus
abdominal pain, watery diarrhea and possible fever bloody stools unusual associated with antibiotic exposure
c diff
brief illness with watery diarrhea and cramps, fever associated with undercooked and unrefrigerated food
clostrium perfringens
watery diarrhea, fever, abdominal pain, vomiting seen with undercooked foods, especially poultry and eggs (cookie dough) antibiotic tx only needed for severe dx or immunocompromised pts
salmonella no cookie dough
vomiting, diarrhea, abdominal pain associated with raw or undercooked shellfish may cause invasive life threatening dx in immunocompromised pts who have liver dx
vibrio vulnificus
watery diarrhea, may be bloody if associated with enterohemorrhagic Shiga toxin producing strain seen with undercooked beef or foods contaminated with bovine feces
Shigella
abdominal pain, bloody diarrhea highest incidence in kids, young adults associated with raw or undercooked meats
campylobacter species
Do we ever isolate the organism responsible for presenting symptoms?
no not really
vomit predominant cases of foodborne illness are likely:
staph aureus, B cereus enterotoxins which are preformed prior to ingestion and cause rapid onset (1-6 hrs) illness see abdominal cramps, vomiting and diarrhea occasionally fever
when do we see Campylobacter jejuni infection?
2-5 days after ingestion
see small volume diarrhea that causes blood or mucus
linked to poultry and 20% develop vomiting
Foodborne illness from Clostridium perfringens onset is
quick. also preformed toxin and so will have illness <24 hrs no vomiting and see watery diarrhea
ETEC or enterotoxigenic E coli illness occurs
>24 hrs and causes diarrhea predominant illness traveler’s diarrhea
raw shellfish diarrhea illness
vibrio parahemolyticus
inflammatory diarrhea pathogens are:
Campylobacter, Shigella, Salmonella
they invade the large bowel and result in abrupt onset, crampy, abdominal pain and frequent small volume diarrhea that lasts several days after consumption
see blood and mucus (not always present) in stool. Can have febrile prodrome and N/V. These are self limited except for enterhemorrhagic E Coli (EHEC)
non inflammatory diarrhea food borne pathogens are:
enterotoxin producing bacteria Clostridium perfringens and enterotoxigenic E coli.
Fever is rarely present
see infection of small bowel and leads to large volume watery diarrhea with or without nausea, vomiting, abdominal cramps and bloating.
norovirus symptoms
headache, myaglias, acute onset vomiting and diarrhea (non bloody with loose or watery stools) resolves in 72 hrs
EHEC producing Shiga toxin is from
under cooked ground beef can develop into HUS
overview of foodborne disease
2 weeks of water diarrhea and was in Mexico. Has Entamoeba histolytica in serology and stool antigen. What do you treat her with?
metronidazole
do not treat with albendazole (treats parasitic worms) or praziquantel (treats schistosomiasis and cysticercosis)
