Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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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.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Three Chamber Heart -- Circulatory System
Auscultating Heart Sounds
Color enhanced X-ray showing a pacemaker implanted in the left side of the chest and the electrode w
Nursing history for nose and sinus assessment
Left-side and right-side heart failure.
How to convert units of any rate to another (Part 3)