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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.