Simplify the following text for a Grade 15 native English-speaking person.
Original: Others work for non-profit organizations , universities , hospitals and larger government entities such as the Centers for Disease Control and Prevention ( CDC ) , the Health Protection Agency , The World Health Organization ( WHO ) , or the Public Health Agency of Canada .
Simplified: Others work for non-profit organizations , universities , hospitals and larger government entities such as the Centers for Disease Control and Prevention ( CDC ) , the Health Protection Agency , The World Health Organisation ( WHO ) .