Improper excreta disposal leads to transmission of disease by following routes except one

UPPSC 2017

Community Health Nursing

Medium

Appeared in: UPPSC 2017

Explanation

Polluted air is the correct answer because pathogens from human excreta are primarily transmitted through the fecal-oral route (ingestion), not through inhalation.
Airborne transmission is the mechanism for respiratory diseases, where pathogens are expelled by coughing or sneezing and then inhaled by a susceptible host.
Enteric pathogens (those found in the gut and feces) like Vibrio cholerae, Salmonella typhi, and hookworm larvae do not effectively spread through the air to cause infection.

Option A: This is a primary route of transmission. Fecal contamination of water sources is a major cause of waterborne diseases like cholera and typhoid.
Option B: This is a well-established route. Food can be contaminated by flies (which breed in feces), unwashed hands, or contaminated water, leading to foodborne illnesses.
Option C: This is a recognized route, especially for parasitic infections. Soil contaminated with feces can harbor eggs and larvae of soil-transmitted helminths like hookworm.

Clinical Relevance

Nursing practice connection: Knowing Routes of disease transmission from improper excreta disposal helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Understanding transmission routes is fundamental for community health nurses to implement effective prevention strategies, such as promoting sanitation (safe toilets), safe water (WASH initiatives), and hygiene education.
Nurses play a key role in educating communities about the importance of handwashing, proper food handling, and avoiding open defecation to break the chain of infection.
What if the question was about the transmission of Tuberculosis? In that case, 'polluted air' (via droplet nuclei) would be the correct answer, as TB is a classic airborne disease.

How to Approach the Question

First, identify the core concept of the question, which is disease transmission related to improper excreta disposal.
Note the critical keyword 'except'. This means you are looking for the option that is NOT a valid transmission route.
Recall the common pathways for fecal-oral transmission, often remembered by the 'F-diagram': Fluids, Fields, Flies, Fingers, and Food.
Evaluate each option against this framework: 'polluted water' (Fluids), 'polluted food' (Food), and 'polluted soil' (Fields) are all valid routes.
The remaining option, 'polluted air', is associated with respiratory diseases, not fecal-oral diseases. Therefore, it is the exception.
Select 'polluted air' as the correct answer.

Concept Tested & Keywords

Concept Tested: Routes of disease transmission from improper excreta disposal
Stem keywords: Improper excreta disposal, transmission of disease, routes
Lead-in keywords: except one
Negative lead-in flag: The question asks for the exception among the given options.

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