Question

I am a 7 letter word.
Most humans want me.
But they hate the first 4 letters of my name.
If you get the 2nd, 3rd and 4th letter you are sick.
The 5th, 6th and 7th is something with a charge.
Who am I?

It is a challenge .
answer it..

Answer 1

million...................

Answer 2

The answer is billion
first 4 letters is bill
2nd 3rd and 4th is ill
5th 6th 7th is ion