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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.