Two or more events that occur around the same time but are unrelated, chance occurrences.

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

A medical condition where the immune system cannot function properly and protect the body from disease. As a result, the body cannot defend itself against infections (like pneumonia). AIDS is caused b [..]

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 short-term, intense health effect.

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

Undesirable experiences occurring after immunization that may or may not be related to the 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 Preventio [..]