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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
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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.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.