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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.