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.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Four approaches to studying the evolution of human behavior.
Stand over your base of support with the knees straight but not locked.
A CNG storage tank from a Honda Civic GX shown with the fixture used to support it while it is being ...
Portable tabletop equipment that provides support for recipients receiving massage.