Question

DPT Vaccine is an example of
A. Passive immunity
B. Active immunity
C. Both A and B
D. Interferon

Answer 1

The DTP vaccine is a class of combination of vaccines for three human infectious diseases: diphtheria, pertussis and tetanus. The components of the vaccine include diphtheria and tetanus toxoids, and either killed whole bacterial cells which cause pertussis or pertussis antigens

Complete answer: Immunity is described as the capability of the cells to prevent itself from an acute disease. Active immunity occurs when exposure to the disease activates the immune system to produce antibodies. Exposure to the disease organism may occur through the introduction of a dead or weakened form of the organism through vaccination (vaccine-induced immunity). Either way, if the immune person comes into contact with the disease in the future, their immune system will recognise it and immediately produce the antibodies needed to fight it. DPT is constantly referred to as triple antigen consisting of tetanus, diphtheria toxoids and also killed pertussis bacilli entire cell adsorbed on insoluble aluminium salts which function as adjuvants. Diphtheria toxoid content varies from 20 to 30 Lf and Tetanus toxoid composition range from 5 to 25 Lf per dose. DPT vaccine is a good example of active immunity. Antibodies are y-shaped proteins attached to toxins or pathogens known as antigens. Antibodies are infection-specific, meaning that the body is shielded from only one disease agent from each antibody. Antibodies created when the system recognizes the virus triggering measles, for example, will not provide defence towards cold or the flu viruses. Passive immunity is prevention against a disease caused by antibodies generated outside of the body. Passive immunity: doesn't really require previous exposure to a disease agent, instantly comes into effect, doesn't quite last long. Interferons are proteins released by a range of cells in the inflammation response to an infection.
Hence, the correct answer is option B.

Note: Immunity does not occur instantly upon exposure to infections. For active immunity to build, it can take several days after first exposure. If it does, nevertheless, the protection will last for a lifespan. The whole cells or antigens will either be depicted as "DTwP" or "DTaP" where the lower case "w" implies pertussis rendered by whole cells and thus the lower case "a" implies pertussis antigens