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Did you know?

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.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Rendering of Virus Rendering of Virus
computer model of the AIDS virus computer model of the AIDS virus
RNA Virus Life Cycle RNA Virus Life Cycle
Structure of the human immunodeficiency virus (HIV). Structure of the human immunodeficiency virus (HIV).
The orange ball is a model of an HPV16 virus The orange ball is a model of an HPV16 virus
An example of a cell-mediated immune response targeting virus-infected cells. An example of a cell-mediated immune response targeting virus-infected cells.
Video: Bone Healing Animation

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