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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.
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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.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.