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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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The horizontal fraction bar was introduced by the Arabs.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.