attenuation
Quick Summary
Attenuation in the context of immunization refers to the weakening of a pathogen, making it less virulent. This process is crucial for creating attenuated vaccines, which contain weakened forms of bacteria or viruses. These weakened agents can still stimulate the immune system to produce antibodies and memory cells, thereby conferring immunity without causing severe illness. This method mimics a mild natural infection, effectively priming the body to fight off future exposure to the actual disease. Examples of diseases for which attenuated vaccines are used include measles, polio, and yellow fever.123
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infectious diseaseImmunization…the organisms are weakened, or attenuated, by some laboratory means so that they still stimulate antibodies but do not produce their characteristic disease. However stimulated, the antibody-producing cells of the body remain sensitized to the infectious agent and can respond to it again, pouring out more antibody. One attack of…
Read More…the organisms are weakened, or attenuated, by some laboratory means so that they still stimulate antibodies but do not produce their characteristic disease. However stimulated, the antibody-producing cells of the body remain sensitized to the infectious agent and can respond to it again, pouring out more antibody. One attack of…
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vaccineVaccine typesWeakened, or attenuated, vaccines consist of microorganisms that have lost the ability to cause serious illness but retain the ability to stimulate immunity. They may produce a mild or subclinical form of the disease. Attenuated vaccines include those for measles, mumps, polio (the Sabin vaccine), rubella, and…
Read MoreWeakened, or attenuated, vaccines consist of microorganisms that have lost the ability to cause serious illness but retain the ability to stimulate immunity. They may produce a mild or subclinical form of the disease. Attenuated vaccines include those for measles, mumps, polio (the Sabin vaccine), rubella, and…
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immune systemActive immunization…other cases, researchers have developed attenuated (i.e., weakened) strains of bacteria or viruses. Attenuated vaccines cause an infection but do not produce the full array of signs and symptoms of the disease, because the infectious agent multiplies to only a limited extent in the body and never reverts to the…
Read More…other cases, researchers have developed attenuated (i.e., weakened) strains of bacteria or viruses. Attenuated vaccines cause an infection but do not produce the full array of signs and symptoms of the disease, because the infectious agent multiplies to only a limited extent in the body and never reverts to the…
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