passive immunity


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Related to passive immunity: innate immunity, artificial passive immunity

passive immunity

n.
Immunity acquired by the transfer of antibodies from another individual, as through injection or placental transfer to a fetus.

passive immunization n.

pas′sive immu′nity


n.
immunity that results from an external source, as injected antibody, or in infants from maternal antibody passed through the placenta or received from breast milk.
[1890–95]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.passive immunity - an impermanent form of acquired immunity in which antibodies against a disease are acquired naturally (as through the placenta to an unborn child) or artificially (as by injection of antiserum)
acquired immunity - immunity to a particular disease that is not innate but has been acquired during life; immunity can be acquired by the development of antibodies after an attack of an infectious disease or by a pregnant mother passing antibodies through the placenta to a fetus or by vaccination
References in periodicals archive ?
Among three classes of Igs (IgG, IgM and IgA), only IgG was found to play main passive immunity functions in small ruminants (sheep, goats) (Table 2).
While passive immunity means taking already prepared antibodies from some other source and the natural example for this is the production of antibodies in mothers and transfer of it through colostrum.
1,2] Transplacental transfer of maternal IgG antibodies provides passive immunity to the infant in the first 6 months of life.
Colostrum is high in energy and an important source of passive immunity, meaning immunity is passed to the baby rather than acquired from exposure, vaccination, or antibodies.
Colostrum is the pre-milk substance that is produced by all mammals and is the first passive immunity that any newborn receives.
Serology, however, can be confounded by passive immunity acquired from blood products.
In the early 1890s, Emil von Behring used serum from a hyperimmune horse (challenged with sublethal dose of Corynebacterium diphtheriae) to develop equine diphtheria antitoxin (DAT), which seemed to confer passive immunity to patients with diphtheria (2).
Merck and Moderna have an existing collaboration and license agreement focused on the discovery and development of mRNA-based infectious disease vaccines and passive immunity treatments.
And not only does it confer a transient passive immunity upon the newborn, the vaccine also guards against the dangers the flu poses to fetuses, she said at the annual meeting of the American College of Obstetricians and Gynecologists.
Typically, the immune system in infants reaches it peak maturity between three to six months of age after passive immunity has waned.
The emerging concept of hyper-immune globulin is likely to increase the efficacy of IVIG treatments by providing passive immunity to patients against disease causing agents.
The contract has been signed to discover and develop modified messenger RNA-based (mRNA) vaccines and passive immunity treatments against viral diseases.