A person who
developed gastroenteritis (nausea, vomiting, and/or diarrhea) within
72 hours of the retirement reception.
- 112 / 120 = 93%
- (112/120) / (15/92)
= 0.933/0.163 = 5.7
virus/Norwalk-like virus. The points may include incubation period,
symptoms, and average duration of illness.
The average incubation period and the duration of symptoms for this
outbreak fits in the range provided by the table. The symptoms for
this outbreak also match. The incubation period rules out staph food
poisoning, C. perfringens, and E. coli O157:H7. The duration of
symptoms and relative absence of vomiting rules out Salmonella.
Answer = B