I NEED HELP FINDING MY BOOK!!!

[Ciara]

Okay, so I read a book at least 4 or 5 years ago on amazon. I ended up reading the entire series [I don't remember how many books where in the series but there was a lot.] Now I want to read the book but i can't remember the title or author. I remember that it was a book about a girl who's name I think was Whitney and she had a family and in it a younger brother around 5 or 6 named Sam. Well the world was basically falling apart so they tried to get into this government facility but only Whitney and her father could go in so Sam and her mother stayed outside. They all also received different kinds of shots. Well eventually Whitney and a few of her friends starts gaining super powers. Hers was the power to read minds. Her and her friends uncovered a secret plot and ran away where she ends up finding her mother and Sam. Also there where people who recieved a red shot and they where called Reapers. This is really all I can remember so please help me find this book!!!