Author Question: A grade school has an outbreak of gastroenteritis and vomiting with nearly half of the schoolboth ... (Read 32 times)

captainjonesify · **on:** Jul 23, 2018

A grade school has an outbreak of gastroenteritis and vomiting with nearly half of the schoolboth students and staffaffected. Which organism is most likely the cause?

A) Norwalk-like virus (calicivirus)
B) Clostridium difficile
C) Vibrio vulnificus
D) E. coli

Question 2

A patient is predicted to benefit from dexamethasone eye drops. The presence of what eye disorder would contraindicate the use of this drug?

A) Fungal infection
B) Nearsightedness
C) Cataracts
D) Bacterial conjunctivitis

laurnthompson · **Reply #1 on:** Jul 23, 2018

Answer to Question 1

A
Feedback:
An outbreak of gastroenteritis that is accompanied by vomiting and that affects both staff and students is most predominately caused by the Norwalk-like virus (calicivirus). Clostridium difficile is a nosocomial diarrhea that would not be characteristic of this population. Vibrio vulnificus is contamination of raw shellfish and would not be the cause of gastroenteritis. E. coli is a less likely cause.

Answer to Question 2

A
Feedback:
Contraindications to dexamethasone include corneal or conjunctival viral disease caused by herpes simplex, vaccina, or varicella. Also, other contraindications are mycobacterial and fungal infection of the eye as well as advanced glaucoma and hypersensitivity to corticosteroids.