head liceLice - insects of the order Lignohumate, blood-sucking parasites mammalian animals and people that are adapted to feeding on a specific host. In the world fauna, there are 300 species of lice.
The people are parasites pubic louse (louse) (Fig. 2) and the human louse, represented by two subspecies: a head (Fig. 1) louse. Head and pubic lice stick eggs to the hair, a - to-clothes, clothes. Life cycle takes place on the host. Eggs (nits) hatch into larvae, which is transformed into adult lice after the third molt. A louse is a vector of pathogens fever (typhus, relapsing) and Volyn fever. Infecting people typhus occurs when rubbing stool lice in the damaged skin when the scratching or by entering feces contaminated hands on the mucous membrane of the nose and eyes. pubic lousethe Causative agent of return of typhoid has no free exit from lice and enters the human body from scratches and damaged skin only at crushing vashi on the body.
Treatment (how to get rid of lice). The lice are based on observance of rules of hygiene: frequent washing of the body, change of linen. Plasic destroy sublimate vinegar (rubbing), powder DDT, white mercury ointment. For obezglavlivanii linen are granted a 10% Douste DDT, 5% acetosa, 3-5% karbofos (Malathion), 1% of the gamma isomer of hexachlorocyclohexane (HCH). Dusty spend a rate of 20 - 30 grams per pair of underwear. When washing with soap DDT use 30 g per 1 kg of Laundry in manual and 20 g in mechanized washing. In order to give linen insecticidal properties, it is impregnated with 0,5-1,0% water emulsion of DDT or 0.5% aqueous emulsion karbofosa. Consumption of emulsion on a pair of underwear - 0,7-0,8 l