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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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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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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.