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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%