Which Description of Antigenic Drift and Antigenic Shift in the Influenza

question 23

Multiple Choice

Which description of antigenic drift and antigenic shift in the influenza virus is incorrectly matched?

• A) Antigenic shift: Often leads to viral strains with new features such as increased infectivity or expanded host range.
• B) Antigenic drift: Spontaneous mutation leads to a minor change in HA or NA spikes.
• C) Antigenic shift: May result in a pandemic outbreak due to widespread lack of immunity.
• D) Antigenic drift: A host vaccinated against an influenza strain before antigenic drift may lack effective immunity and be susceptible to infection.
• E) Antigenic drift: Often involves reassortment of viral strains in an animal host followed by a "species jump" to humans.

---

Definitions:

Personnel Activities

Actions and tasks related to the management, development, and well-being of employees within an organization.

Work Flow Design

The process of analyzing work processes and procedures to make them more efficient and effective.

Organization's Structure

The design that dictates how roles, responsibilities, and authority are distributed and coordinated within an organization.

Compressed Workweek

An alternative work arrangement allowing employees to work longer hours on fewer days of the week.