Causes Of Common Illness: Dysentery Basic 3 Social Studies Lesson Note

 WHAT IS DYSENTERY?

Dysentery is a serious type of diarrhea with blood and mucus in the stool.

Simple definition: Dysentery is when someone passes bloody, watery stool many times a day and feels very sick.

Difference between dysentery and ordinary diarrhea:

• Ordinary diarrhea: Watery stool without blood
• Dysentery: Watery stool WITH blood and mucus (slimy substance)

Why dysentery is dangerous:

• Loss of blood makes person weak
• Can cause severe dehydration
• Can lead to death if not treated
• Spreads easily to other people

Other names for dysentery:

• Bloody diarrhea
• Flux
• Bloody stool

1. SYMPTOMS OF DYSENTERY

MAIN SYMPTOMS:

1. BLOODY STOOL

• Blood mixed with watery stool
• Red or dark brown blood
• May see blood clots
• Mucus (slimy substance) in stool

2. FREQUENT BOWEL MOVEMENTS

• Going to toilet 10-20 times per day
• Small amounts each time
• Urgent feeling to go
• Cannot control when to go

3. SEVERE STOMACH CRAMPS

• Sharp, cutting pain in belly
• Pain comes in waves
• Much worse than ordinary stomach ache
• Pain before and during passing stool

4. FEVER

• High body temperature
• Body feels hot
• May shiver with fever
• Temperature can be 38-40°C

5. DEHYDRATION

• Loss of body water
• Dry mouth and lips
• Sunken eyes
• Less urination
• Weakness and dizziness

6. NAUSEA AND VOMITING

• Feeling sick in stomach
• May vomit food and liquid
• Cannot keep food down
• Loss of appetite

Example: 10-year-old Emeka started passing bloody stool 8 times yesterday with severe stomach cramps and fever. His mother took him to hospital immediately.

1. CAUSES OF DYSENTERY
2. BACTERIAL CAUSES

SHIGELLA BACTERIA

• Most common cause of dysentery
• Very small living things (germs)
• Attacks the large intestine (big gut)
• Makes intestine walls bleed

SALMONELLA BACTERIA

• Another type of bacteria
• Also causes bloody diarrhea
• Can cause typhoid fever too
• Spreads through contaminated food

How bacteria cause dysentery:

• Bacteria enter the body through mouth
• Travel to the intestines
• Attack intestine walls
• Make tiny wounds that bleed
• Cause inflammation and pain

2. AMOEBIC CAUSES

ENTAMOEBA HISTOLYTICA

• Tiny parasite (living creature)
• Causes amoebic dysentery
• Eats intestine walls
• Creates ulcers (sores) in intestines

How amoeba causes dysentery:

• Amoeba enters body through contaminated water
• Lives in large intestine
• Burrows into intestine walls
• Creates holes that bleed
• Can spread to liver and other organs

1. HOW DYSENTERY SPREADS
2. CONTAMINATED WATER

Drinking dirty water:

• Water with germs from sewage
• Well water contaminated with waste
• River water used for drinking
• Water stored in dirty containers

Example: Children drinking from a well that has been contaminated with human waste can get dysentery.

2. CONTAMINATED FOOD

Eating infected food:

• Food washed with dirty water
• Food prepared by infected person
• Food left uncovered for flies
• Raw fruits and vegetables not properly cleaned

Example: Eating salad washed with contaminated water or food prepared by someone with dirty hands.

3. POOR HYGIENE

Dirty hands and poor cleanliness:

• Not washing hands after using toilet
• Not washing hands before eating
• Using dirty utensils
• Not keeping surroundings clean

Example: A person with dysentery who doesn’t wash hands after using toilet can spread germs to everything they touch.

4. FLIES AND INSECTS

Insects carrying germs:

• Flies land on human waste
• Same flies land on food
• Carry germs from waste to food
• Spread infection to healthy people

Example: Flies that sit on exposed human waste and then land on uncovered food spread dysentery germs.

5. PERSON-TO-PERSON SPREAD

Direct contact transmission:

• Caring for sick person without protection
• Sharing eating utensils
• Using same toilet without proper cleaning
• Poor sanitation in crowded places

Example: Family members can catch dysentery from caring for a sick relative if they don’t follow hygiene rules.

1. CONDITIONS THAT INCREASE DYSENTERY RISK
2. POOR SANITATION

Bad waste disposal:

• Open toilets near water sources
• Human waste not properly disposed
• Sewage flowing into drinking water
• No proper toilet facilities

2. OVERCROWDING

Too many people in small spaces:

• Refugee camps
• Slums and poor neighborhoods
• Overcrowded schools
• Places with poor hygiene facilities

3. POOR WATER SUPPLY

Lack of clean water:

• No access to treated water
• Sharing water sources with animals
• No proper water storage
• Contaminated water pipes

4. MALNUTRITION

Poor nutrition makes people weak:

• Not eating enough food
• Lack of vitamins and minerals
• Weak immune system
• Cannot fight infections well

5. POOR HEALTHCARE

Limited medical facilities:

• No nearby hospitals or clinics
• Cannot afford medical treatment
• Delayed diagnosis and treatment
• Lack of health education

1. PREVENTION OF DYSENTERY
2. WATER SAFETY

Ensuring clean water:

• Boil water before drinking
• Store water in clean containers
• Cover water containers
• Don’t drink from contaminated sources
• Use water purification tablets if needed

2. FOOD SAFETY

Eating safe food:

• Wash fruits and vegetables properly
• Cook food thoroughly
• Eat food while still hot
• Cover food to protect from flies
• Don’t eat food left out for long time

3. PERSONAL HYGIENE

Keeping yourself clean:

• Wash hands with soap after using toilet
• Wash hands before eating
• Keep fingernails short and clean
• Take regular baths
• Wear clean clothes

4. ENVIRONMENTAL HYGIENE

Keeping surroundings clean:

• Use proper toilets
• Dispose of waste properly
• Keep compound clean
• Control flies and insects
• Don’t defecate in open places

5. COMMUNITY MEASURES

What communities can do:

• Build proper toilet facilities
• Provide clean water supply
• Educate people about hygiene
• Control sewage and waste
• Improve healthcare services

1. TREATMENT OF DYSENTERY
2. IMMEDIATE CARE

First aid measures:

• Give plenty of clean water
• Use oral rehydration salt (ORS)
• Seek medical help immediately
• Don’t give ordinary medicines
• Keep person comfortable

2. MEDICAL TREATMENT

What doctors do:

• Test stool to identify cause
• Give appropriate antibiotics
• Provide intravenous fluids if needed
• Monitor for complications
• Advice on diet and care

3. HOME CARE

Supporting recovery:

• Continue giving fluids
• Start with light foods gradually
• Follow doctor’s instructions
• Maintain strict hygiene
• Monitor symptoms

CLASS EXERCISES

1. Fill in the blanks:

• Dysentery is bloody _______ with mucus
• The most common cause of dysentery is _______ bacteria
• Dysentery spreads through contaminated _______ and _______
• People with dysentery may go to toilet _____ times per day

2. True or False:

• Dysentery is the same as ordinary diarrhea: _____
• Dysentery can cause death if not treated: _____
• Only dirty water causes dysentery: _____
• Flies can spread dysentery germs: _____
• Good hygiene can prevent dysentery: _____

3. List 4 symptoms of dysentery:
4. Choose the correct answer: What makes dysentery different from ordinary diarrhea? a) It’s more watery b) It contains blood c) It smells bad

Which bacteria commonly causes dysentery? a) Shigella b) Malaria c) Typhoid

How many times might someone with dysentery go to toilet per day? a) 2-3 times b) 5-6 times c) 10-20 times

5. Match the cause to how it spreads dysentery:

• Shigella bacteria → Contaminated food and water
• Dirty hands → _______
• Flies → _______
• Contaminated water → _______

6. Circle the ways dysentery spreads: Clean water, Dirty hands, Cooked food, Flies, Proper toilets, Contaminated water, Good hygiene, Person-to-person contact
7. List 3 conditions that increase dysentery risk:
8. Complete these prevention methods:

• _______ water before drinking
• Wash _______ with soap after using toilet
• _______ food to protect from flies
• Use proper _______ facilities

9. Answer these questions:

• What is dysentery? _______
• How is dysentery different from ordinary diarrhea? _______
• What are the main causes of dysentery? _______
• How can we prevent dysentery? _______

10. Identify the cause: What might cause dysentery in these situations?

• Children drinking from a contaminated well: _______
• Eating food that flies have landed on: _______
• Not washing hands after using toilet: _______
• Eating unwashed fruits: _______