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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?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.