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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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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 first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.