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Vaccines prevent between 2.5 and 4 million deaths every year.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.