Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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By definition, when a medication is administered intravenously, its bioavailability is 100%.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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