A disease characterized by painful skin lesions that occur mainly on the trunk (back and stomach) of the body but which can also develop on the face and in the mouth. Complications include headache, [..]

A vaccine containing partial cellular material as opposed to complete cells.

 The production of antibodies against a specific disease by the immune system. Active immunity can be acquired in two ways, either by contracting the disease or through vaccination. Active immunity is [..]

A substance (e.g. aluminum salt) that is added during production to increase the body's immune response to a vaccine.

 A panel of 10 experts who make recommendations on the use of vaccines in the United States. The panel is advised on current issues by representatives from the Centers for Disease Control and Preventi [..]

An immediate and severe allergic reaction to a substance (e.g. food or drugs). Symptoms of anaphylaxis include breathing difficulties, loss of consciousness and a drop in blood pressure. This conditio [..]

A substance that fights bacteria.

Foreign substances (e.g. bacteria or viruses) in the body that are capable of causing disease. The presence of antigens in the body triggers an immune response, usually the production of antibodies.

 Literally "against-virus" -- any medicine capable of destroying or weakening a virus.

 A medical condition characterized by inflammation of the joints which results in pain and difficulty moving.