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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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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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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.