Artificial immunity refers to immunity that is acquired through medical intervention. There are several synonyms for this term, including vaccine-induced immunity, acquired immunity, and induced immunity. These terms describe the same concept of immunity that is developed through vaccines or other medical procedures, rather than through natural exposure to a pathogen. Vaccines work by exposing the body to a small, harmless amount of a pathogen or a piece of the pathogen, which stimulates the immune system to create an immune response. This response provides protection against future exposure to the pathogen. Overall, artificial immunity is a crucial tool in modern medicine for protecting individuals and populations from infectious diseases.