What is the most difficult part of studying ANY outbreak…from obesity to Ebola?

Go to the following website: http://www.cdc.gov/epicasestudies/computerbased.html (Links to an external site.) and download the “Gastroenteritis” study, if you have not done so already. It will take you about 2-3 hours to go through the program. Be sure and answer all the questions (although you will not be graded on them now…some of them WILL appear on the final exam and now is your chance to see the answers and earn those extra points!!).

(Note: in this investigation, they organize the “steps” into 6 rather than 10…but despite the older organization of the protocol, you will still see our 10 steps covered in their list.)

In your opinion, after completing this investigation, what is the most difficult part of studying ANY outbreak…from obesity to Ebola? (Please answer this question in 250 words, and include examples from the study that you just completed.)