What is a secondary immune response? Why does it develop faster than the primary? What is the reason for resistance to chickenpox in people who have had this disease?
A secondary immune response is a specific immune response caused by repeated contact with an antigen. It develops faster than the primary one, since lymphocytes (immune memory cells) are already formed in the body that are able to specifically recognize and neutralize this antigen, and synthesize antibodies against it.
The secondary immune response is characterized not only by a quick “start”, but also by a more intense course of protective reactions. Therefore, in most cases, the destruction of a foreign object is carried out even before it has time to cause harm to the body. This is due to resistance to pathogens of a number of infectious diseases (including chickenpox) in people who have had these diseases.
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