What has surprised or fascinated you from the Hot Zone so far?

the events that have surprised me the most is how quickly a disease can spread. A lot of people can be put in danger with a simple mistake. it is ridiculous can many these scientists in the book have made many dangerous mistakes that caused the deaths of their patients. it is incredible how the first patient didn't bother to warn anyone that he was sick. but even worse, he did not consider what lives he would be putting in danger on the plane.