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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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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%.