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Will lice die automatically in winter?

No.

Lice are extremely sensitive to temperature and humidity. They are afraid of both moisture and cold. They are inactive below 0℃ and crawl slowly at 10℃. However, if they parasitize on an organism, the temperature of the organism can make it crawl. Survive, very active at 30℃, and die quickly at 44℃.

Extended information:

Lice

The adults and nymphs suck blood from the host body throughout their lives. The main hosts are: terrestrial mammals, with a few marine mammals, and humans are also often parasitized. Lice are not only harmful by sucking blood, but also make the host itchy and restless, and can transmit many important human and animal diseases.

Relapsing fever spread by lice is a worldwide disease, and the causative agent of this disease is a spirochete. The lifespan of a louse is about six weeks, and each female louse lays about ten eggs per day, which adhere firmly to human hair or clothing.

The lice hatch in about eight days and immediately bite and suck blood. After about two or three weeks, they will grow into adults through three molts. Lice live a parasitic life throughout their lives. People can spread it to each other through contact.

Reference: Baidu Encyclopedia Lice