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rachel2046 发表于 2019-5-27 11:09 
如果你说的是head lice.恰恰经常洗头的小孩才会得。不要想当然的认为印度小孩就不爱干净。 ...
为什么经常洗头的反而会得?
Head lice facts
A female louse lays three to eight eggs (nits) per day. The eggs are firmly attached to the hair fibres, within 1.5 cm of the scalp, and rely on warmth from the head to hatch. Head lice do not have wings or jumping legs, so they cannot fly or jump from head to head. They can only crawl.
People catch head lice from direct head-to-head contact with another person who has head lice. This can happen when people play, cuddle or work closely together. Head lice are most common among children and their families. |
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