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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?
There are more bacteria in your mouth than there are people in the world.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.