Which of the following infectious diseases is caused by a virus of myxoviruses group virus?

Appeared in: Raj. CHO -2025

Explanation

The question asks to identify the disease caused by a virus from the myxovirus group.
Myxoviruses are a group of RNA viruses divided into two families: Orthomyxoviridae (e.g., influenza virus) and Paramyxoviridae (e.g., measles virus, mumps virus).
Measles is caused by the measles virus, which belongs to the family Paramyxoviridae.
Therefore, measles is the correct answer as it is caused by a virus from the myxovirus group.

Option A: Cholera is a bacterial infection caused by Vibrio cholerae, not a viral infection.
Option C: Leptospirosis is a bacterial disease caused by spirochetes of the genus Leptospira.
Option D: This is not a valid disease option. It is a placeholder indicating that the user did not select an answer.

Visual 1: Infographic: Classification of Myxoviruses. This visual would show the two main families (Orthomyxoviridae and Paramyxoviridae) and list the key diseases caused by each, such as Influenza, Measles, and Mumps, clarifying their relationship.
Visual 2: Diagram: Structure of the Measles Virus. A diagram showing the key components of the paramyxovirus, including its non-segmented RNA genome and envelope proteins, would help illustrate its classification.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of infectious agents, specifically myxoviruses as background academic context rather than a clinical decision trigger.
Differentiating between viral and bacterial causes of illness is fundamental in nursing, as it dictates the course of treatment (e.g., antibiotics for bacteria, supportive care or antivirals for viruses).
Measles is a highly contagious but vaccine-preventable disease. Nurses play a crucial role in educating the public about the importance of the MMR (Measles, Mumps, Rubella) vaccine.
Recognizing the classic symptoms of measles (cough, coryza, conjunctivitis, Koplik's spots, and maculopapular rash) is essential for early diagnosis, isolation, and public health reporting to prevent outbreaks.

How to Approach the Question

First, identify the key term in the question stem: 'myxoviruses group'.
Recall or deduce the definition of myxoviruses. This group includes two major families: Orthomyxoviridae and Paramyxoviridae.
Analyze each option to determine its causative agent.
Eliminate options that are not caused by a virus. Cholera and Leptospirosis are caused by bacteria.
Confirm that the causative agent of the remaining viral option, Measles, belongs to one of the myxovirus families. The measles virus is a paramyxovirus, confirming it as the correct answer.

Concept Tested & Keywords

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Textbook of Applied Microbiology Including Infection Control and Safety (Second Edition) p. 89-93

Practise the full Raj. CHO -2025

Attempt every question from this paper in a timed mock, then review the full solution for each one.