Why are the CDC called in to do the post mortem examination?

Question

Why does this following thing occur in the book?

Asked by rachelle m #354484 on 1/23/2014 6:34 PM

Last updated by Aslan on 1/23/2014 6:52 PM

Answered by Aslan on 1/23/2014 6:52 PM

They needed to find out when and how he contracted the disease.