Acquired immunity (also known as adaptive immunity)
This immune reaction is quite fast due to the immune memory.
The administration of a vaccine stimulates the body to produce a longer lasting type of immunity called "adaptive immunity." This type of immunity involves the production of specific antibodies and memory cells that provide long-term protection against the targeted pathogen.
Acquired immunity: When a person gets sick from a disease, their body produces antibodies to fight off the infection. After recovery, the body retains memory cells that recognize the specific pathogen if it reappears, providing immunity against future infections.
Active immunity involves the production of antibodies (by B lymphocytes) and cell-mediated response (with T lymphocytes). It renders relatively longer immunity (compared to passive immunity). Active immunity may be natural or artificial.This type of active immunity is said to be natural because the immunity is induced not by deliberate exposure (such as vaccination). The individual has developed immunity to a live pathogen by having been exposed to it and by developing a primary immune response that led to immunological memory.
specific immunity
Active Immunity
Active Immunity
Adaptive Immunity is the type of immunity that creates memory cells. This is a specific type of immunity that reacts to the "non-self" antigen of pathogens. In the initial or first introduction to the pathogen, Immunoglobulin M (IgM) predominates the circulation. But in thesubsequentintroduction of the same pathogen where in memory cells were already formed from the previous event, Immunoglobulin G (IgG) now predominates. These antibodies either neutralize pathogens directly, or signals the complement system and/or the Natural Killer cells to eliminate the pathogen.Since memory cells are already formed, the body is better equipped in dealing with the same pathogen the second time around.This is the same concept in vaccinations, wherein we introduce into the body the same pathogen but in a weakened form removing it's virulence.
Active immunity involves the production of antibodies (by B lymphocytes) and cell-mediated response (with T lymphocytes). It renders relatively longer immunity (compared to passive immunity). Active immunity may be natural or artificial.This type of active immunity is said to be natural because the immunity is induced not by deliberate exposure (such as vaccination). The individual has developed immunity to a live pathogen by having been exposed to it and by developing a primary immune response that led to immunological memory.
Natural immunity.
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Naturally acquired active immunity
Passive immunity