Viral Gastroenteritis MCQ Quiz | Gastrointestinal Infections

1. What is the most common cause of severe, dehydrating gastroenteritis in infants and young children worldwide?

2. A major outbreak of vomiting and diarrhea occurs on a cruise ship. Which virus is the most likely etiological agent?

3. The live attenuated oral Rotavirus vaccine is contraindicated in infants with a previous history of which condition?

4. The primary pathophysiological mechanism of Rotavirus-induced diarrhea is:

5. On electron microscopy, which virus displays a characteristic “wheel-like” or “spoke-like” appearance?

6. The cornerstone of management for a child with mild to moderate dehydration due to viral gastroenteritis is:

7. Gastroenteritis caused by enteric Adenovirus serotypes 40 and 41 is often characterized by:

8. Which of the following best describes the typical incubation period for Norovirus infection?

9. The protein NSP4, which acts as a viral enterotoxin, is a key virulence factor of which virus?

10. Microscopic examination of a stool sample from a patient with uncomplicated viral gastroenteritis typically reveals:

11. A 2-year-old child presents with acute watery diarrhea. Which of the following clinical findings would most strongly suggest a BACTERIAL rather than a viral etiology?

12. The common term “winter vomiting bug” is often used to describe infections caused by which virus?

13. For a severely dehydrated child with viral gastroenteritis who is unable to tolerate oral fluids and is in shock, what is the most appropriate initial management step?

14. The primary mode of transmission for most agents of viral gastroenteritis, including Norovirus and Rotavirus, is:

15. What is the most sensitive and specific diagnostic test for confirming Norovirus in a stool sample during an outbreak investigation?

16. The use of anti-motility agents like loperamide is generally not recommended in young children with acute gastroenteritis due to an increased risk of:

17. According to WHO guidelines, zinc supplementation in children with acute diarrhea has been shown to:

18. Astrovirus, a cause of generally mild gastroenteritis, is named for its characteristic:

19. Norovirus belongs to which viral family?

20. Which of the following is NOT a typical symptom or sign of uncomplicated viral gastroenteritis?

21. The recommended composition of the standard WHO Oral Rehydration Solution (ORS) is a:

22. What is the most effective single measure to prevent the spread of viral gastroenteritis in a household or daycare setting?

23. Immunity to Norovirus following an infection is typically:

24. A patient with viral gastroenteritis is found to have sunken eyes, poor skin turgor, and a rapid, thready pulse. These are signs of:

25. Which virus is a double-stranded RNA virus?