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Did you know?
The average adult has about 21 square feet of skin.
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There are 20 feet of blood vessels in each square inch of human skin.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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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.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.