Microsoft word - guidelinesforparentstocontrolheadlice
GUIDELINES FOR PARENTS TO CONTROL HEAD LICE
Head lice are parasitic insects that are transmitted by contact with an infested person or item such as a rug,
couch or car seat and/or by the exchange of hats, clothing, helmets, headphones, or personal hair items.
Head lice are more likely to be transmitted at home than in the school setting. 1. INSPECTING A CHILD'S HEAD FOR LICE AND NITS
• Inspect all family members' hair thoroughly, especially in areas close to the scalp at the neckline and
behind the ears for lice and nits (head lice eggs). Nits are firmly attached to hair shafts and are usually yellow to white. The adult louse is about the size of a sesame seed and is greyish-white to tan. It may be helpful to use a magnifying glass when inspecting your child’s head.
• Correct identification of actual nits (head lice eggs) is critical. Anything that slides along the hair shaft is
• Crawling lice may be difficult to see, but the presence of nits with ¼” of the scalp can suggest the
2. TREATMENT FOR HEAD LICE
• Permethrin or pyrethrins is the active ingredient in most over-the-counter products. The active ingredient
of choice is permethrin,
which is currently in Nix® (1% Permethrin) cream rinse formulation. Follow
the label directions carefully, first washing the hair with a non-conditioning shampoo.
• Treat individuals with live lice. It is important to apply one treatment per infested person. Do not divide
treatments among infested people. Do not treat a second time until at least 7-10 days following the first treatment. Repeating treatments may be dangerous and are unnecessary.
• Daily removal of lice and nits from a child's hair with a nit or flea comb with long metal teeth is the
most effective lice control measure. Complete nit combing of the entire head has to be performed every day (dampen hair for easier combing) until no more lice or nits are found. Any nits that cannot be combed out must be removed either by picking them out with the fingernails or snipping the hair above where the eggs are attached. A useful method for nit combing is to part the hair into small sections. After each section is combed, secure each section to keep track of what has been combed.
• When two treatments with over-the-counter products have not worked, contact your health provider
about lice preparations available by prescription. Currently there is no conclusive scientific data to support the efficacy of over-the-counter products that suffocate, drown or dissolve the glue on nits.
3. LICE BIOLOGY AND WASHING RECOMMENDATIONS
• Lice die quickly (within 2 days) without a human blood meal (off a person)
• Nits take 8-10 days to hatch and then about 9 or more days to become adults and lay eggs
The following may be done to decrease the chance of re-infestation from lice or nits: • Clothing and bedding may be washed in hot water (130°F) then dried on a hot cycle for at least 20
• Items that are not washable may be dry cleaned or put in a sealed plastic bag for two weeks to prevent
re-infestation from lice hatched from nits.
• Soak combs, brushes, hair bands, and barrettes in rubbing alcohol or Lysol® for 1 hour, or boil for five
• Carpets and furniture should be vacuumed. Do not use household lice sprays. • Secure long hair with elastics to minimize hair contact with other children.
These measures may decrease re-infestation, but should not be substituted for above treatment. Adapted from “Guidelines for Parents to Control Head Lice”, California Department of Public Health, 2009
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