IMMUNOLOGY

Detailed explanation-1: -Passive Immunity. Passive immunity is provided when a person is given antibodies to a disease rather than producing them through his or her own immune system. A newborn baby acquires passive immunity from its mother through the placenta.

Detailed explanation-2: -The passive form of artificial immunity involves introducing an antibody into the system once a person has already been infected with a disease, ultimately relieving the present symptoms of the sickness and preventing re-occurrence.

Detailed explanation-3: -Two types of immunity exist-active and passive: Active immunity occurs when our own immune system is responsible for protecting us from a pathogen. Passive immunity occurs when we are protected from a pathogen by immunity gained from someone else.

Detailed explanation-4: -Types of immunity: Active natural: Body produces antibodies in response to exposure to a live pathogen. Active artificial: Body produces antibodies in response to a vaccine. Passive natural: Antibodies are passed from the mom to her baby through the placenta and breastmilk.

Detailed explanation-5: -Passive immunity can develop naturally, such as when a mother’s antibodies are transferred to a growing fetus or nursing infant. It also can occur artificially when antibodies that protect against specific pathogens are transferred, often via blood or plasma transfusion.