(1) Like pediculosis , scabies is caused by an obligate human parasite that is transmitted by human-to-human contact.(2) Itching is the primary symptom of pediculosis .(3) Which of the following agents is/are considered safe, effective, and least toxic in the treatment of pediculosis ?(4) Although pubic lice infestation, called pediculosis , is considered a sexually transmitted disease, it can be contracted in other ways.