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Did you know?
Everyone has one nostril that is larger than the other.
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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.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.