Passive immunity
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In immunology, passive immunity is the transfer of active humoral immunity of ready-made antibodies. Passive immunity can occur naturally, when maternal antibodies are transferred to the fetus through
A vial of diphtheria antitoxin, dated 1895
This image is from the Historical Medical Library of The College of Physicians of Philadelphia. This displays the administration of diphtheria antitoxin from horse serum to young child, dated 1895.
Antiserum
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In immunology, antiserum is a blood serum containing antibodies that is used to spread passive immunity to many diseases via blood donation. For example, convalescent serum, or passive antibody transf
Passive immunity
…horses, or other animals) are transferred to non-immune persons through blood products that contain antibodies, such as in immunoglobulin therapy or antiserum therapy. Passive immunization is used when there is a high risk of infection and insufficient time for the body to develop its own immune response, or…
Convalescent plasma collected at a blood donor center during the COVID-19 pandemic.