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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
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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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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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People about to have surgery must tell their health care providers about all supplements they take.
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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.