Pediculus humanus

Definition

Pediculus humanus is a species of lice that infests humans, causing pediculosis. It can act as a vector for several bacterial infections affecting the circulatory and lymphatic systems.

5 Must Know Facts For Your Next Test

1. Pediculus humanus includes two subspecies: Pediculus humanus capitis (head louse) and Pediculus humanus corporis (body louse).
2. Body lice are known vectors for Bartonella quintana, the bacteria responsible for trench fever.
3. They can also transmit Rickettsia prowazekii, which causes epidemic typhus.
4. Infestation with body lice is often associated with poor hygiene and crowded living conditions.
5. Diagnosis typically involves finding live lice or nits on the body or clothing.

Review Questions

• What are the two subspecies of Pediculus humanus?
• Which bacterial infections can be transmitted by body lice?
• What conditions are typically associated with body lice infestations?

Related terms

Bartonella quintana: A bacterium transmitted by body lice that causes trench fever.

Rickettsia prowazekii: A bacterium transmitted by body lice that causes epidemic typhus.

Pediculosis: The medical condition caused by infestation with lice.