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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
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 immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.