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  2. Seroconversion - Wikipedia

    en.wikipedia.org/wiki/Seroconversion

    Several studies have demonstrated that individuals who recovered from COVID-19 infections and are seropositive for COVID-19 at the time of vaccination produce significantly more anti-spike IgG antibodies in response to vaccination than individuals who are not seropositive for COVID-19, while individuals who have recovered from COVID-19 ...

  3. Convalescent plasma - Wikipedia

    en.wikipedia.org/wiki/Convalescent_plasma

    Specific antibodies to a pathogen are thought to be the primary driver of clinical benefit from convalescent plasma. [1] In the case of viral pathogens, the subset of antibodies that retain most of the activity is the one that drives viral neutralization, i.e. neutralizing antibodies, which can be quantified in a viral neutralization assay.

  4. Immunoglobulin G - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_G

    The water-accessible surface area of an IgG antibody. Immunoglobulin G (IgG) is a type of antibody. Representing approximately 75% of serum antibodies in humans, IgG is the most common type of antibody found in blood circulation. [1] IgG molecules are created and released by plasma B cells. Each IgG antibody has two paratopes.

  5. COVID-19 testing - Wikipedia

    en.wikipedia.org/wiki/COVID-19_testing

    COVID-19 Antigen Rapid Test Kit; the timer is provided by the user. Mucus from nose or throat in a test liquid is placed onto a COVID-19 rapid antigen diagnostic test device. COVID-19 rapid testing in Rwanda. An antigen is the part of a pathogen that elicits an immune response. Antigen tests look for antigen proteins from the viral surface.

  6. Antibody-dependent enhancement - Wikipedia

    en.wikipedia.org/wiki/Antibody-dependent_enhancement

    Prior to the COVID-19 pandemic, ADE was observed in animal studies of laboratory rodents with vaccines for SARS-CoV, the virus that causes severe acute respiratory syndrome . As of 27 January 2022 [update] , there have been no observed incidents with vaccines for COVID-19 in trials with nonhuman primates, in clinical trials with humans, or ...

  7. Laboratory diagnosis of viral infections - Wikipedia

    en.wikipedia.org/wiki/Laboratory_diagnosis_of...

    A person who has recently been infected by a virus will produce antibodies in their bloodstream that specifically recognize that virus. This is called humoral immunity. Two types of antibodies are important. The first called IgM is highly effective at neutralizing viruses but is only produced by the cells of the immune system for a few weeks.

  8. Antiserum - Wikipedia

    en.wikipedia.org/wiki/Antiserum

    In the Behring facilities, the horses were viewed as life savers; therefore, they were well treated. A few of the individual horses used for serum production were named, and celebrated for their service to medicine, both human and non-human. Convalescent plasma collected at a blood donor center during the COVID-19 pandemic.

  9. Coronavirus spike protein - Wikipedia

    en.wikipedia.org/wiki/Coronavirus_spike_protein

    During the COVID-19 pandemic, anti-vaccination misinformation about COVID-19 circulated on social media platforms related to the spike protein's role in COVID-19 vaccines. Spike proteins were said to be dangerously "cytotoxic" and mRNA vaccines containing them therefore in themselves dangerous. Spike proteins are not cytotoxic or dangerous.