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Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
There are more bacteria in your mouth than there are people in the world.
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?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.