Which of the following statements about noroviruses is...

Name: Problem 7, Chapter 24: Nester's Microbiology: A Human Perspective
Uploaded: 2021-08-03T23:44:47-08:00
Duration: 1 min 45 s
Channel: Joanna Quigley
Description: Which of the following statements about noroviruses is false? a) They are the most common cause of viral gastroenteritis in the United States. b) They have a low infectious dose. c) They generally cause vomiting lasting 1 to 2 weeks. d) Immunity does not last long. e) They are a category B bioterrorism agent.

Which of the following statements about noroviruses is false? a) They are the most common cause of viral gastroenteritis in the United States. b) They have a low infectious dose. c) They generally cause vomiting lasting 1 to 2 weeks. d) Immunity does not last long. e) They are a category B bioterrorism agent.

Which of the following statements about noroviruses is false?
a) They are the most common cause of viral gastroenteritis in the United States.
b) They have a low infectious dose.
c) They generally cause vomiting lasting 1 to 2 weeks.
d) Immunity does not last long.
e) They are a category B bioterrorism agent.

Key Concepts

Bioterrorism Classification

Bioterrorism classification involves categorizing biological agents based on their ease of dissemination, morbidity, and mortality potential. Certain agents, due to their high infectivity and potential public health impact, are classified into categories that guide preparedness and response strategies.

Immunity Duration

Immunity duration describes how long protective immunity lasts after an infection. With norovirus, the immune response tends to be short-lived, resulting in the possibility of repeated infections over time.

Symptom Duration

Symptom duration refers to the typical period during which symptoms manifest following infection. For illnesses like viral gastroenteritis caused by norovirus, the symptoms usually resolve within a few days, making prolonged durations atypical.

Norovirus

Norovirus is a highly contagious virus commonly responsible for outbreaks of gastroenteritis. It spreads rapidly in communal environments and is known for its robustness, low infectious dose, and ability to cause widespread illness.

Viral Gastroenteritis

Viral gastroenteritis is an inflammation of the stomach and intestines caused by various viruses, leading to symptoms like vomiting and diarrhea. It is typically self-limiting with a short duration, but its rapid onset and spread can result in significant public health concerns.

Infectious Dose

The infectious dose is the quantity of pathogen required to cause disease in a host. In the context of viruses like norovirus, a very low infectious dose means that even minimal exposure can lead to infection, which contributes to its tendency to cause outbreaks.

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