IMMUNOLOGY

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: -Passive immunity: Passive immunity is “borrowed” from another source and it lasts for a short time. For example, antibodies in a mother’s breast milk give a baby temporary immunity to diseases the mother has been exposed to.

Detailed explanation-3: -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: -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-5: -However, passive immunity is short term, unlike active immunity which is long-lasting. That’s because, in passive immunity, the antibodies are borrowed from another person and not continuously replenished as it is in active immunity.

Detailed explanation-6: -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.