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Head lice are most common among young children — 6 million to 12 million lice outbreaks occur yearly in children between 3 and 11 in the US — though adults are vulnerable to head lice as well.
Lice infestation in general is known as pediculosis, and occurs in many mammalian and bird species. [55] Lice infesting other host species are not the same organism as that which causes head lice infestations in humans, nor do the three louse species which infest humans infest any other host species. [citation needed]
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Lice have no wings or powerful legs for jumping, so they use the claws on their legs to move from hair to hair. [27] Normally, head lice infest a new host only by close contact between individuals, making social contacts among children and parent-child interactions more likely routes of infestation than shared combs, hats, brushes, towels ...
Live lice are about the size of a sesame seed, have six legs and are tan to grayish white, the CDC says. There are treatments for lice There are a few different options when it comes to treating lice.
Body lice are spread through prolonged direct physical contact with a person who has them or with that person's clothing, bed linens or towels. In the United States, body lice infestations are rare, typically found mainly in homeless people who do not have access to bathing and regular changes of clean clothes.
To live, a nymph must feed on blood. The adult pubic louse resembles a miniature crab when viewed through a strong magnifying glass. Pubic lice have six legs; their two front legs are very large and look like the pincher claws of a crab—thus the nickname "crabs". Pubic lice are tan to grayish-white in color.
A dead nit attached to a hair. No nit policy is a public health policy implemented by some education authorities to prevent the transmission of head lice infestation.The "no nit" policy requires the sending home and barring of all children who have nits (egg shells) on their hair from controlled settings such as school, summer camp or day care facilities.