What type of immunity produces antibodies following an actual infection?

Naturally Acquired Active Immunity occurs when an individual's immune system is exposed to a pathogen through natural infection, leading to the production of specific antibodies as the body responds to the threat. This process involves the immune system recognizing the pathogen, activating B cells, and subsequently creating antibodies that can specifically target that pathogen if exposed again in the future.

The antibodies produced not only provide immediate defense against the specific pathogen but also establish a memory within the immune system. This allows for a more robust and rapid response upon subsequent exposures to the same pathogen.

In contrast, Artificially Acquired Active Immunity involves the introduction of antigens through vaccinations, where the immune system responds by producing antibodies, but no actual infection occurs. Naturally Acquired Passive Immunity refers to the transfer of antibodies from one individual to another, such as from mother to infant during breastfeeding, providing temporary protection without the immune system creating its own antibodies. Lastly, Artificially Acquired Passive Immunity involves the administration of pre-formed antibodies to an individual, which offers immediate but temporary protection without stimulating the user’s immune system to produce its own antibodies.