What type of immunity is developed without medical intervention after an individual gets sick?

The type of immunity that is developed without medical intervention after an individual gets sick is known as natural active immunity. This form of immunity occurs when a person is exposed to a pathogen, such as a virus or bacteria, and their immune system responds by producing antibodies specifically against that pathogen.

Over time, these antibodies provide protection against future infections by the same organism because the immune system remembers the pathogen, allowing for a quicker and more effective response upon subsequent exposures. This process is a natural one since it arises from the body’s intrinsic ability to defend itself against infections without any external assistance, such as vaccinations or medical treatments.

In contrast, natural passive immunity refers to antibodies acquired from another individual, such as a mother to her child through breast milk, which does not involve the individual’s active immune response. Artificial immunity, on the other hand, involves medical intervention—like vaccinations (artificial active) or serum injections (artificial passive)—which do not involve the natural immune response following an infection.