Passive immunity only lasts a few months.

Question

Quizplus · Accepted Answer

Passive immunity is developed when an individual receives antibodies from another source such as breast milk, serum or plasma transfusion, or immunoglobulin injection. This type of immunity only lasts for a few months because the antibodies received from these sources have a limited lifespan in the body. In contrast, active immunity, which is developed after exposure to a pathogen or through vaccination, can last for years to even lifelong.

Passive Immunity Only Lasts a Few Months