The manufacturer of First Alert, the leading brand of carbon monoxide detectors, recommends the following if the alarm goes off: 1  Turn off appliances, or other sources of combustion at once. 2  Immediately get fresh air into the premises by opening doors and windows.
The cause of lice (known medically as pediculosis) is an infestation with one of three types of a parasitic insect. The three kinds of lice that affect humans include: 1  Pediculus humanus capitis (head lice). 2  Pediculus humanus corporis (body lice). 3  Phthirus pubis (pubic lice or crab lice; also called crabs).he three kinds of lice that affect humans include: 1  Pediculus humanus capitis (head lice). 2  Pediculus humanus corporis (body lice). 3  Phthirus pubis (pubic lice or crab lice; also called crabs).
For the disease known as head lice, see Head lice infestation. The head louse (Pediculus humanus capitis) is an obligate ectoparasite of humans that causes head lice infestation (pediculosis capitis). Head lice are wingless insects spending their entire life on the human scalp and feeding exclusively on human blood.