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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.