• The CDC reports that somewhere between 6 and 12 million people in the United States are infested annually.
  • Children from 3 to 11 years old are particularly susceptible, no one is immune and anyone can get head lice.
  • All socioeconomic classes are affected.
  • Some research concludes that girls are more commonly infested, but neither hair length nor personal hygiene is a predictive factor. Lice, in fact, prefer clean hair, since it’s easier to adhere to than oily hair.
  • No one knows why some people are more prone than others to having head lice, but blood type and Rh factor seem to be elements.
  • Once someone gets lice, the possibility of getting them again, especially in the short term, has proven to be greater.