Is the emergence of the 2009 A (H1N1) virus an example of antigenic shift or antigenic drift? Explain the difference between shift and drift. Why was the 2009 A (H1N1) influenza epidemic considered a pandemic?

Infectious diseases

Case Study 1

1. Is the emergence of the 2009 A (H1N1) virus an example of antigenic shift or antigenic drift? Explain the difference between shift and drift.

2. Why was the 2009 A (H1N1) influenza epidemic considered a pandemic?

Case Study 2

Name two reasons as to why the US failed to contain COVID-19?

2. Based on the lessons learned thus far, what can the U.S. do in the future when faced with a pandemic or national emergency related to infectious diseases?