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Questions and Answers
What distinguishes the multiple subtypes within each virus type of Orthomyxoviridae?
What distinguishes the multiple subtypes within each virus type of Orthomyxoviridae?
- Variations in the envelope structure
- Variations in the host cell attachment proteins
- Variations in the viral RNA structure
- Variations in the surface glycoproteins-hemagglutinin (HA) and neuraminidase (NA) (correct)
How does the influenza virus lead to secondary bacterial infections in the respiratory tract?
How does the influenza virus lead to secondary bacterial infections in the respiratory tract?
- By triggering an allergic reaction leading to bacterial invasion
- By inducing overproduction of mucus in the respiratory tract
- By directly attacking the bacteria in the respiratory tract
- By infecting and causing a loss of the ciliated epithelium and disrupting mucociliary flow (correct)
What is the origin of the envelope of Myxoviruses?
What is the origin of the envelope of Myxoviruses?
- Stolen from other viruses
- Derived from host-membrane by budding (correct)
- Generated from viral RNA
- Synthesized de novo by the virus
Which demographic group is most fatally affected by influenza virus infections?
Which demographic group is most fatally affected by influenza virus infections?
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