Question

1. antigenic drift is the first step toward a potential pandemic or global epidemic. a○true b○false

Explanation:

Antigenic drift involves small - scale changes in the surface antigens of a virus over time. While it can contribute to the spread and evolution of a virus, it is not necessarily the first step toward a potential pandemic or global epidemic. Pandemics can occur due to various factors and antigenic shift (a more significant change in viral antigens) is often more closely associated with the emergence of new pandemic - capable strains.

Answer:

B. False