Sunfish you REALLY need to get hold of a book called The Science of Fear by Daniel Gardner.
The book is basically about how irrational fear is actually dangerous...and why our brains work the way they do.
It also explains a lot of other interesting facts about our psyche...as in why so many people believe in disastrous global warming when there is actually no strong evidence to support that hypothesis...and a shedload of other stuff...including fears about 'pandemics' and WHY those fears are irrational.
Good read!!