Read attached pdf. And answer questions below :
Is the emergence of the 2009 A virus an example of antigenic shift or antigenic drift? Explain the difference between shift and drift.
Why was the 2009 A influenza epidemic considered a pandemic?
COVID-19 Case Study
Name two reasons as to why the US failed to contain COVID-19?
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?
