Health and Hygiene forms a core component of Environmental Studies (EVS) at the primary level, appearing consistently in MAHA TET Paper I. This topic connects directly to children's daily lives and helps future teachers understand how to promote healthy habits in young learners.
For the exam, you must know the distinction between personal and community hygiene, the expanded immunisation schedule followed in India, and the causes, symptoms and prevention of common childhood diseases. Questions typically test factual recall (vaccination ages, disease-pathogen links) as well as application (identifying correct hygiene practices, advising on disease prevention).
Mastering this topic also supports your understanding of related EVS areas like Food and Nutrition, Body Systems, and Family and Society, since health behaviours intersect with all these domains.
Key Concepts
**Health** is a state of complete physical, mental and social well-being, not merely the absence of disease (WHO definition). Teachers must promote all three dimensions.
**Personal hygiene** refers to practices an individual performs to maintain cleanliness and prevent infection—bathing, handwashing, oral care, nail trimming, clean clothing.
**Community hygiene** (public health) includes safe drinking water, proper waste disposal, sanitation facilities and vector control at the societal level.
**Communicable diseases** spread from person to person through air, water, food or vectors; **non-communicable diseases** (NCDs) do not spread and include lifestyle conditions like diabetes.
**Immunisation** is the process of making the body resistant to a specific disease by administering a vaccine that stimulates antibody production.
**Pathogens** are disease-causing organisms—bacteria, viruses, fungi, protozoa and worms. Knowing which pathogen causes which disease is exam-critical.
**Incubation period** is the time between exposure to a pathogen and the appearance of symptoms; it varies by disease.
**Prevention is better than cure**—a guiding principle in EVS that underscores hygiene education, vaccination and early detection.
Key Facts
| Fact | Detail | |------|--------| | WHO definition of health | Physical + mental + social well-being | | Handwashing duration | At least 20 seconds with soap | | Safe drinking water methods | Boiling, chlorination, filtration, RO | | ORS full form | Oral Rehydration Solution (salt + sugar + water) | | UIP full form | Universal Immunisation Programme (India, 1985) | | Mission Indradhanush | Launched 2014 to strengthen routine immunisation | | National Immunisation Day | Focus on polio eradication (pulse polio) | | Vector for malaria | Female Anopheles mosquito | | Vector for dengue | Aedes aegypti mosquito |
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A child develops symptoms like high fever, red rash all over the body, and watery eyes. The doctor confirms it is a disease that can be prevented by vaccination. Which disease is the child most likely suffering from?
Q2 · Health and Hygiene · MEDIUM
Which of the following practices is MOST important for preventing water-borne diseases like cholera and diarrhoea in children?
Q3 · Health and Hygiene · MEDIUM
In the Universal Immunisation Programme (UIP) of India, BCG vaccine is given to a newborn child to protect against which disease?
Q4 · Health and Hygiene · HARD
A teacher notices that several students in her class are suffering from night blindness and dry eyes. She suspects a nutritional deficiency. Which of the following recommendations should she give to the parents to prevent further complications?
Q5 · Health and Hygiene · EASY
Which of the following is the main cause of dental cavities in children?
### Example 1 — Identifying Correct Hygiene Practice
**Question:** Which of the following is the most effective way to prevent the spread of common cold in a classroom?
(A) Spraying room freshener (B) Keeping windows closed (C) Covering mouth while coughing and regular handwashing (D) Giving antibiotics to all students
**Solution:** Common cold is caused by viruses and spreads through respiratory droplets. Antibiotics work only against bacteria, so option D is incorrect. Closed windows reduce ventilation and can increase spread, so B is wrong. Room freshener does not kill pathogens, so A is wrong. Covering the mouth limits droplet dispersal; handwashing removes pathogens from hands. **Answer: C**
### Example 2 — Vaccine-Disease Matching
**Question:** BCG vaccine is given at birth to protect against which disease?
(A) Polio (B) Measles (C) Tuberculosis (D) Hepatitis B
**Solution:** BCG stands for Bacillus Calmette-Guérin, a vaccine derived from a weakened strain of Mycobacterium bovis. It provides protection against tuberculosis (TB), especially severe forms in children. **Answer: C**
### Example 3 — Disease Transmission
**Question:** Cholera spreads mainly through:
(A) Mosquito bites (B) Contaminated water and food (C) Air droplets (D) Direct skin contact
**Solution:** Cholera is caused by the bacterium Vibrio cholerae. It enters the body when a person consumes water or food contaminated with faecal matter containing the bacteria. This is the faeco-oral route. Mosquitoes transmit malaria and dengue, not cholera. **Answer: B**
Common Mistakes
| Wrong Thinking | Correct Understanding | |----------------|----------------------| | Assuming all diseases are treated with antibiotics | Antibiotics kill bacteria only; viral infections (cold, flu, measles, chickenpox) do not respond to antibiotics. | | Confusing vaccines with medicines that cure disease | Vaccines prevent disease by building immunity before infection; they do not cure an existing infection. | | Believing boiling water removes all impurities | Boiling kills pathogens but does not remove dissolved chemicals or heavy metals; filtration or RO is needed for those. | | Mixing up vectors—thinking any mosquito spreads any mosquito-borne disease | Anopheles transmits malaria; Aedes aegypti transmits dengue, chikungunya and Zika. Species matters. | | Forgetting booster doses in the immunisation schedule | Primary doses build initial immunity; boosters (DPT at 16–24 months and 5–6 years, TT at 10 and 16 years) are essential for sustained protection. |
Quick Reference
**Health = physical + mental + social well-being** (WHO).
**Handwash rule:** Soap + water + 20 seconds minimum.
**BCG at birth → TB; OPV at birth → Polio; Hep B at birth → Hepatitis B.**