Head lice do not carry or transmit diseases. The only medical concern is the possibility of a secondary infection due to scratching the bites.
They can not jump or fly. They do not have knees to bend for jumping and they do not have wings for flying.
Head lice are most commonly spread through head to head contact.
Researchers have found that 99.6% of over-the-counter pyrethrin- and permethrin-based lice treatments are no longer effective in treating lice.
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