PATHOLOGY

Detailed explanation-1: -The major advantage to passive immunity is that protection is immediate, whereas active immunity takes time (usually several weeks) to develop. However, passive immunity lasts only for a few weeks or months. Only active immunity is long-lasting.

Detailed explanation-2: -Whereas active immunity refers to the process of exposing the individual to an antigen to generate an adaptive immune response, passive immunity refers to the transfer of antibodies from one individual to another. Passive immunity provides immediate but short-lived protection, lasting several weeks up to 3 or 4 months.

Detailed explanation-3: -Passive immunity provides short-term protection against infection. Antibodies are proteins that bind to and help attack pathogens, such as bacteria and viruses. They are a key component of the human immune system. Typically, antibodies are produced by white blood cells in response to infection.

Detailed explanation-4: -The greatest downside to passive immunity is that these antibodies don’t stay in the body for very long. Because your body isn’t continually reacting to specific pathogens, the antibodies that fight them will die off without restocking.

Detailed explanation-5: -But passive immunity as the name suggests, is not developed directly in the individual. It is provided by means of transferred antibodies from an individual who developed them on direct exposure to the pathogen to an individual who has not been exposed to that pathogen.