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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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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.
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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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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.