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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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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.