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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The average adult has about 21 square feet of skin.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.