What is the term for immunity that is acquired through antibodies produced by the body after recovering from an illness?

The term for immunity that is acquired through antibodies produced by the body after recovering from an illness is referred to as Acquired Immunity. This type of immunity develops as a result of the body's immune response following an infection or illness, where the immune system recognizes pathogens and generates specific antibodies to target them.

When an individual recovers from an illness, their immune system retains a memory of the specific pathogen that caused the infection. This memory allows for a quicker and more efficient response if the individual is exposed to the same pathogen in the future, significantly reducing the likelihood of reinfection.

Natural Immunity is a component of acquired immunity, emphasizing that antibodies are produced in response to actual exposure to pathogens, but it's not the comprehensive label for the immune response that includes both recovery and memory of the disease. Passive Immunity, on the other hand, refers to antibodies that are transferred from another source, such as from mother to infant, rather than those produced by the individual’s immune response. Innate Immunity refers to the body's first line of defense against pathogens, which is present at birth and doesn’t change based on previous infections. Thus, Acquired Immunity accurately encapsulates the concept of immunity developed from illness and subsequent recovery.