why does people get chicken pox ?

Question: why does people get chicken pox ?
- Keywords:
  chicken pox
Asked by Brie mode fearless to Andy, Duane, Giovanna, Katie, Theresia on 13 Nov 2014. This question was also asked by Caleb.
- Duane Mellor answered on 13 Nov 2014:
  
  They catch the varicella zoster virus from someone else
- Andrew Philp answered on 14 Nov 2014:
  
  passed between people through contact, like scratching the infected area then passing it onto another person

Question: why does people get chicken pox ?