gastroenteritis Flashcards
what does it cause
diarrhoea +/- vomiting
what treatment has reduced mortality rates
oral rehydration
who is at risk of infection
- travellers
- men having sex with men
- infants in day-care
what virus causes outbreaks
norovirus
what do some people get post-infection
IBS
can e.coli cause diarrhoea
yes
what produces enterotoxins
by the bacteria adhering to the intestinal epithelium
what kind of diarrhoea does enterotoxins cause
watery
what enterotoxins are already in food
- staph aureus
- bacillus cereus
what causes rice food poisoning
bacillus cereus
cooked rice left standing overnight at room temperature
what do cytotoxins damage
the intestinal mucosa
what causes watery diarrhoea
enterotoxins
what else does bacillus cereus and staph aureus cause
profuse vomiting
where is salmonella found
- livestock
- oviducts of chicken (eggs)
what does salmonella produce that causes diarrhoea
enterotoxins
when does salmonella symptoms occur
12-48
symptoms of salmonella
- nausea
- cramping
- abdominal pain
- diarrhoea
- fever
characteristics of diarrhoea caused by salmonella
profuse and watery or bloody
how is salmonella diagnosed
culturing the organism from blood or faeces
what is treatment of salmonella
empirical and includes oral rehydration
what type of infection is campylobacter jejuni
zoonotic infection
what animals have campylobacter jejuni
poultry and cattle
what is the most common cause of outbreaks of diarrhoea
campylobacter jejuni
what are the sources of campylobacter jejuni outbreaks
- undercooked meat (beefburgers)
- contaminated milk products and water
how long is incubation period of campylobacter jejuni
2-4 days
symptoms of campylobacter jejuni
- nausea
- diarrhoea
- severe abdominal cramps
what is diarrhoea like in campylobacter jejuni
profuse and watery
diagnosis of campylobacter jejuni
stool cultures
treatment of campylobacter jejuni
azithromycin
what causes shigella
poor hygiene
when do symptoms start in shigella
24-48 hours
symptoms of shigella
- small-volume stools +blood
- dehydration
treatment of shigella
antibiotics - decreases severity
- ciprofloxacin
diagnosis of e.coli
stool culture