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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.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.