About head lice infestations

Which of the following statements is true regarding head lice infestations?
  • A) Females are more likely affected.
  • B) Retreatment with pyrethrin is rarely needed.
  • C) Head lice can live off the body up to 1 week.
  • D) Low socioeconomic children are more likely affected.
  • E) Dogs are a common vector for head lice.

The answer is:  ( A ).
Head lice are thought to be the most common type and are developing resistance to commonly used pediculicides. Every year, between 6 million and 12 million people in the United States, primarily children 3 to 10 years of age, are infested with head lice. Girls are at greater risk because..............