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-> In the News
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Fri, Mar 14 2014, 3:32 pm
As if battling head lice isn’t bad enough, newly published research says killing the dreaded bugs has become harder than ever.
Researchers in the U.S. are warning people about the prevalence of head lice that are resistant to insecticides found in most commonly used anti-lice shampoos and ointments.
This “super lice” variation is now present in 97.1 per cent of Canadian and 99.6 per cent of U.S. lice cases, according to a study published this month in the Journal of Medical Entomology.
The so-called “TI mutation” is making lice immune to pyrethrins and pyrethroids, insecticides that have been safely used for decades to kill off the critters, researchers said.
Based on a DNA analysis of lice samples from 32 locations in Canada
and the U.S., researchers concluded that the prevalence of the TI mutation is “uniformly high” across North America.
“Alternative approaches to treatment of head lice infestations are critically needed,” they wrote.
The Canadian lice samples were collected in 2008 from more than a dozen communities in three provinces: Quebec, Ontario and British Columbia. The only cities where lice susceptible to pyrethrins and pyrethroids could still be found were Toronto, Oakville, Ont., and Sudbury, Ont.
This is not the first time researchers have noted the alarming percentage of treatment-resistant lice. A Canadian study published in 2010 also found that 97.1 per cent of tested lice were resistant to pyrethrins or pyrethroids.
Jason Tetro, a microbiologist who was not involved in the study, said the lice mutation likely started happening decades ago, as the use of insecticides expanded.
Just like some bacteria develop a resistance to antibiotics from overuse, lice have built up tolerance to widely used insecticides, Tetro told CTV News Channel Friday.
“Over the last 60 years, it’s gone worldwide,” he said.
Not all hope is lost, however. The latest study notes that clinical tests have shown the effectiveness of other substances, including benzyl alcohol, spinosad (an insecticide) and ivermectin (anti-parasitic medicine), in the battle against lice.
Some people also swear by natural treatments, such as coconut or tea tree oil, vinegar, and even mayonnaise.
And while adult lice may be difficult to get rid of, another study recently published in the Journal of Medical Entomology found that removing lice eggs with plain old conditioner and water is just as effective as using more expensive nit removal products.
http://www.ctvnews.ca/health/t.....29429
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causemommysaid
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Fri, Mar 14 2014, 3:45 pm
are they resistant to margarine?
take 4 sticks of margarine at room temperature, smear it through the hair, (use more on thick or long hair and less on thin or short hair), wrap the head in a few layers of saran wrap and cover with a bathing cap. Keep on head for 8-10 hours. use dish soap to wash hair afterwards and then use a lice comb to get out the dead bugs.
this treatment will smother them to death. it may take two treatments to be full rid of them.
I've done this every time I had lice and it always works
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PinkFridge
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Fri, Mar 14 2014, 3:56 pm
Lousy news.
Hydrogenated fat's been around for years. But now the CW is to stress combing, combing and more combing, with Pantene as a good loosener.
Oh, and if you use the hydrogenated fat, a good degreasing dishwashing detergent will help afterwards
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thanks
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Fri, Mar 14 2014, 4:02 pm
Have a piece of masking tape handy. If you see a live bug, just use the tape to catch it. The bug will stick without pulling out hair.
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SplitPea
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Fri, Mar 14 2014, 4:53 pm
Professional lice lady here.
The best treatment is STILL combing combing combing with a very very good comb. You don't need to kill them just get them off your head.
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Rubber Ducky
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Fri, Mar 14 2014, 5:19 pm
Head shaving has never sounded so good! Just reading this thread makes my scalp itch...
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