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Did you know?
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Did you know?
Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.