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Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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The longest a person has survived after a heart transplant is 24 years.