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Housing and Health

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Housing & Child Health - Unsafe Sanctuaries

  • Overcrowding: >2 persons/room (WHO); ↑ risk of airborne infections.

    ⭐ Overcrowding is a critical housing determinant strongly associated with increased transmission of airborne infections like tuberculosis and acute respiratory infections (ARIs) in children.

  • Ventilation: Inadequate (low air changes/hour) ↑ indoor pollutants.
  • Sanitation:
    • Poor latrine access: ↑ fecal-oral diseases.
    • Improper waste disposal: ↑ vector breeding.
  • Water: Unsafe sources/storage ↑ waterborne diseases.
  • Structural Defects: Dampness, mold, collapse risk.
  • Indoor Air Pollution: Biomass fuel, smoke ↑ ARIs, allergies.
  • Pest Infestation: Rodents, insects ↑ diseases, allergies.
  • Home Safety: ↑ Risk of injuries (falls, burns, poisoning).

Indoor Air Pollution - Choked Childhoods

Solid fuel combustion health impacts

  • Common Sources:
    • Biomass fuel (wood, dung, crop residue in chulhas), kerosene, coal for cooking/heating.
    • Environmental Tobacco Smoke (ETS).
    • Mosquito coils, incense sticks.
    • Volatile Organic Compounds (VOCs) from paints, furnishings.
    • Dampness, mold.
  • Key Pollutants:
    • Particulate Matter ($PM_{2.5}$), Carbon Monoxide ($CO$).
    • Sulphur Dioxide ($SO_2$), Nitrogen Dioxide ($NO_2$).
    • Formaldehyde, Polycyclic Aromatic Hydrocarbons (PAHs).
    • Biological allergens (dust mites, mold spores).
  • Health Impacts in Children:
    • ↑ Acute Lower Respiratory Infections (ALRI), pneumonia.
    • Asthma exacerbation, new-onset asthma.
    • Otitis media.
    • Low birth weight, preterm birth.
    • Impaired cognitive development.
    • Sudden Infant Death Syndrome (SIDS).
    • Long-term: Lung cancer.

⭐ Household air pollution (HAP) from burning solid fuels (e.g., wood, dung) for cooking is a leading environmental risk factor for childhood pneumonia and mortality in India.

Water, Sanitation & Hygiene (WASH) - Germy Grounds

  • Unsafe Sources & Contamination:
    • Water: Unprotected wells, surface water (rivers, ponds).
    • Contaminants: Fecal (bacteria, viruses, protozoa), chemical (arsenic, fluoride).
  • Inadequate Sanitation & Poor Hygiene:
    • Sanitation: Open defecation, unimproved latrines.
    • Hygiene: Lack of handwashing facilities/soap.
    • 📌 Mnemonic: F-diagram (Feces, Fingers, Flies, Fields, Fluids, Food).
  • Associated Diseases:
    • Diarrheal: Cholera, typhoid, dysentery, rotavirus.
    • Helminthiasis: Ascariasis, trichuriasis, hookworm.
    • Skin/Eye: Scabies, trachoma.
  • Prevention Strategies:
    • Safe Water Chain: Source protection → treatment → safe storage.
    • Household Water Treatment (HWT): Boiling, filtration, SODIS (Solar Water Disinfection), chlorination.
    • Sanitation: Use of sanitary latrines (e.g., pour-flush, VIP).
    • Hygiene: Handwashing with soap (HWWS) at critical times.

Fecal-oral disease transmission routes and barriers

⭐ Access to improved sanitation facilities and consistent handwashing with soap can reduce diarrheal disease incidence in children by over 30-40%.

Home Hazards & Toxins - Danger Zones

  • Unintentional Injuries: Leading threats.
    • Falls, Burns, Drowning, Poisoning, Electrocution.
  • Lead Poisoning (Pb):
    • Sources: Old paint, dust, soil, water pipes, batteries, traditional remedies (Surma, Kajal).
    • Effects: Neurodevelopmental deficits (↓IQ), anemia, abdominal colic.
    • Screening: Blood Lead Level (BLL).
    • Intervention: BLL >5 µg/dL.

    ⭐ Childhood lead exposure, even at low levels (BLL >5 µg/dL), can cause irreversible neurological damage, impacting IQ and behavior; screening is crucial in high-risk settings.

  • Pesticide Exposure:
    • Improper storage/use.
    • Effects: Varied, e.g., organophosphate toxicity.
  • Other Toxins:
    • Mercury (thermometers, fish).
    • Asbestos (old insulation).

Sources of Lead Exposureoka

High‑Yield Points - ⚡ Biggest Takeaways

  • Overcrowding ↑ risk of respiratory infections (TB, ARI) & skin infections (scabies).
  • Poor ventilation & indoor air pollution (biomass fuel) linked to pneumonia, asthma, & chronic lung issues.
  • Unsafe water & inadequate sanitation cause ↑ diarrheal diseases, typhoid, & helminthiasis.
  • Damp housing & mold growth associated with allergies, asthma, & respiratory symptoms.
  • Lead exposure (old paint, pipes) results in neurodevelopmental deficits & anemia.
  • Inadequate lighting can lead to domestic accidents & affect mental well-being.
  • Rodent/insect infestations transmit diseases like dengue & leptospirosis.

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Practice Questions: Housing and Health

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A 3 yrs old child is brought to the emergency room by his parents after they found him having a generalized seizure at home. The child's breath smells of garlic, and he has bloody diarrhea, vomiting, and muscle twitching. Which poison is it likely that this child has encountered?

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A small for gestational baby with _____, small palpebral fissures, absent philtrum and an ventricular septal defect most likely has a syndrome due to maternal alcohol use in pregnancy.

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A small for gestational baby with _____, small palpebral fissures, absent philtrum and an ventricular septal defect most likely has a syndrome due to maternal alcohol use in pregnancy.

microcephaly

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Housing and Health – NEET-PG Pediatrics Notes | Oncourse