Passive Immunization

Passive immunization is the process of obtaining immunity to a disease by administration of antibodies. It involves the transfer of antibodies from one individual to another, rather than the production of new antibodies. This is either done through injection or ingesting antibodies, for example in the form of a pill, liquid or nasal spray. It is a quick and effective way to gain immunity from a variety of diseases, particularly those caused by viruses and bacteria, such as tetanus and hepatitis. Passive immunization can provide temporary protection against a virus or bacteria, but the effects are short lived. It is an important tool in disease prevention and treatment and has many applications in health care.