The Age of Vanish

In the year 2017, every parent suddenly dies from a disease who's origins were unknown. This is the guide to that world from past to present and every other thing in between.
Please note:
This is NOT an exciting action story or a lovey romance, I am writing an encyclopedia basically. An encyclopedia that does not begin at A and has no real order asides from "Oh this would be a good idea!"
For many this will be extremely boring, but I am okay with that. This is just a way for me to set out the world I created.
I give thanks to many books including:
The Gone Series by Michael Grant, this helped build the no parents idea.
World War Z (the book, not the movie) by Max Brooks, this is what truly gave me the idea to expand on.
There are many others but these are the main two.
Thank You and Enjoy