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Did you know?
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.