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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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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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There are approximately 3 million unintended pregnancies in the United States each year.