When anti-bodies are produced inside the infected body, it is called

Appeared in: UPPSC 2017

Explanation

Active immunity is acquired when the host's own immune system is triggered to produce antibodies.
This process is initiated by exposure to an antigen, which can occur naturally through an infection or artificially through vaccination.
The key characteristic is that the body is 'actively' involved in creating its own defense.
This type of immunity leads to the formation of immunological memory, providing long-term protection against the specific pathogen.

Option A: Passive immunity involves receiving pre-formed antibodies from an external source, not producing them within one's own body. The host's immune system is passive in this process.
Option C: The question describes a specific process. Active and passive immunity are distinct mechanisms and are not simultaneously occurring in this context. The production of antibodies by the body is exclusively characteristic of active immunity.
Option D: This option is incorrect because a correct term exists among the choices. The process described in the question is the definition of active immunity.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Types of Acquired Immunity (Active vs. Passive) as background academic context rather than a clinical decision trigger.
Understanding the difference between active and passive immunity is fundamental for nurses, especially in vaccination and infectious disease management.
Nurses administer vaccines to induce active immunity, educating patients on the importance of completing vaccine schedules to build long-term protection.
In certain clinical situations, such as post-exposure prophylaxis for rabies or tetanus, nurses administer immunoglobulins to provide immediate passive immunity.

How to Approach the Question

First, carefully read the question and identify the key phrase: 'antibodies are produced inside the infected body'.
Focus on the word 'produced'. This implies an active process by the host.
Next, evaluate the options based on your knowledge of immunology.
Recall the definition of 'Passive immunity': receiving antibodies from an outside source.
Recall the definition of 'Active immunity': the body producing its own antibodies.
Match the key phrase from the question ('produced inside the body') with the correct definition. This directly corresponds to active immunity.

Concept Tested & Keywords

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E6 Pharmacology Nursing Lilley 11e Part 3 p. 158-160

E6 Physiology Essentials Sembulingam 10e Part 1 p. 126-128

E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) p. 95-97

Practise the full UPPSC 2017

Attempt every question from this paper in a timed mock, then review the full solution for each one.