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Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Did you know?
During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.