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The average office desk has 400 times more bacteria on it than a toilet.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
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