QuestionSBA
QuestionChoice
The norovirus incubation period is usually 1-2 days.
10009548
d
Norovirus
QuestionChoice
*Clostridium perfringens* is enterotoxin induced, and its’ incubation period is usually within hours. This is classically found in reheated meat dishes or cooked meats.
10009545
a
*Clostridium perfringens*
QuestionChoice
*Shigella dysenteriae* incubation period is 1-3 days, so this would not be possible here.
10009547
c
*Shigella dysenteriae*
QuestionChoice
*Salmonella typhi* is a bacterial infection that causes gastroenteritis. However, it is usually caused by eating a seafood water source infected by faeces/urine or eating raw vegetables fertilised with human waste, neither of which is indicated in this question.
10009546
b
*Salmonella typhi*
QuestionChoice
*Clostridium difficile* is an anaerobic spore former and not transmitted through food.  It can also colonise without causing disease.
10009549
e
*Clostridium difficile*
Concept
Chapter
2693
5350
GI Infections
Topic
192
Upper GI
14457
A woman was on her lunch break from work one day. She buys lunch from a street stall and becomes unwell within 12 hours.

What is the likely cause?
a