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The average office desk has 400 times more bacteria on it than a toilet.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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There are 20 feet of blood vessels in each square inch of human skin.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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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.