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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?
As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.