By which one of the following measures does the human immune deficiency virus not spread?

RRB Nsg. Superintendent 21 July 2019 (shift 1st)

Applied Microbiology & Infection control (E5)

Easy

Appeared in: RRB Nsg. Superintendent 21 July 2019 (shift 1st)

Explanation

'Shaking hands' because HIV is not transmitted through casual, non-sexual physical contact.
The virus is fragile and does not survive on skin surfaces, in the air, or on inanimate objects.
Extensive studies confirm that activities like shaking hands, hugging, sharing toilets, or using the same utensils do not pose a risk for HIV transmission.
This distinction is crucial for public health education to reduce stigma and misinformation surrounding HIV/AIDS.

Option A: This is a known risk factor for HIV transmission. While 'intoxicant drugs' is broad, it commonly refers to intravenous (IV) drug use where sharing contaminated needles and syringes directly introduces the virus into the bloodstream.
Option B: This is the most common mode of HIV transmission worldwide. The virus is present in sexual fluids (semen, vaginal fluid) and can be transmitted during unprotected intercourse.
Option C: Receiving HIV-infected blood or blood products is a highly efficient mode of transmission, as it directly introduces the virus into the circulatory system. While screening has made this rare in many countries, it remains a valid transmission route.

Visual 1: Infographic: A chart comparing proven HIV transmission routes (sexual contact, blood-to-blood contact, mother-to-child) with common myths and non-transmission routes (shaking hands, hugging, mosquito bites, sharing toilets). This visual helps to quickly differentiate facts from fears.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Modes of HIV transmission and non-transmission as background academic context rather than a clinical decision trigger.
A fundamental nursing responsibility is to provide accurate education to patients, families, and the community to reduce the stigma associated with HIV. Clarifying that HIV is not spread by casual contact is a key part of this education.
Understanding transmission routes is essential for implementing universal precautions in all healthcare settings, treating all blood and body fluids as potentially infectious to protect both healthcare workers and patients.
What if? If a nurse sustains a needlestick injury from a known HIV-positive patient, the risk of transmission is very low (approximately 0.23%). However, immediate action is required, including washing the area and starting post-exposure prophylaxis (PEP) with antiretroviral drugs, ideally within hours, to reduce the risk even further.

How to Approach the Question

First, identify the negative keyword 'not' in the question stem. This signals that you must find the option that is an exception or false.
Second, recall the three main routes of HIV transmission: sexual, parenteral (blood-related), and perinatal (mother-to-child).
Third, evaluate each option against these known transmission routes.
Option A ('Use of intoxicant drugs') relates to parenteral transmission via shared needles.
Option B ('Sexual contact') is a primary transmission route.
Option C ('Blood transfusions') is a form of parenteral transmission.

Concept Tested & Keywords

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