Do group selfies help the spread of lice?

(NBC) -- The story that teens were getting lice by taking too many selfies went viral this week.  But is it true?

Health experts say no.

But at least one hair expert says there is some credence to the theory.

"When the middle school and high school kids get together to take their selfie and they are together for a prolonged time, where they are taking 20 or 30 pictures. ...