SCI/P/4: WORM INFECTION

This Unit is about worms that affect our lives.

WORM INFECTION

  • Worms are parasites which affect the intestines.
  • Parasites are living things which depend on other living things for food causing harm to them.
  • Some worms feed on digested food.
  • Some worms feed on blood.

WATCH THE VIDEO BELOW TO LEARN ABOUT WORMS AND THE EFFECTS

A host

A host is a living thing on which a parasite depends.

Types of worms

  1. Tape worms
  2. Round worms
  3. Thread worms
  4. Hook worms

Tape worm

  1. Tape worms live in the intestines.
  2. Its body is divided into segments
  3. Tape worms are got through eating half cooked meet.
  4. A tape worm feeds on blood.

tape worm

Signs of tape worms

  1. Diarrhoea
  2. Itching on the skin.

Symptoms of tape worms

  • Always feeling hungry.
  • Stomach ache.
  • Loss of energy.

Effects of tape worm

  1. Leads to stunted growth.
  2. Leads to body weakness.
  3. Leads to anaemia.

Prevention of tape worm infection 

  • Eating well cooked meat.
  • Regular deworming.
  • Proper disposal of human faeces.

Hook worms

They are tiny worms with hooks around their mouth.

The hooks are used to suck blood from the host.

They are 1cm long, red in colour and cannot be seen in faeces.

Spread of hook worms

  1. Through the skin when we walk outside without shoes/sandals.
  2. Eating contaminated fruits and vegetables.

hookworm

Signs of hook worm infection

  • Diarrhoea
  • Loss of weight
  • Coughing
  • The skin itching at the site of penetration.

Symptoms

  1. Abdominal pain

Effects of hookworm infection

  1. They lead to loss of blood since they feed on blood.

Prevention of hook worm infection

  1. Put on shoes when walking in a dirty place.
  2. Proper disposal of human faeces and urine.
  3. Eat well washed fruits and vegetables.
  4. Regular deworming.
  5. Wash hands before eating and serving food.

Thread worms

  • They are wide threadlike worms.
  • They live in the large intestine.
  • They are about 1 cm
  • They are spread through fingers with faeces to the mouth.

Signs of thread worm infection

  1. Itching around the anus.
  2. Loss of weight.

Symptoms of thread worms

  1. Stomach ache.
  2. Loss of appetite.

Thread worm

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Prevention of thread worm

  • Wash hands after visiting the latrine.
  • Keep finger nails short.
  • Washing hands and bathing regularly.
  • Wash under wear, night dresses and beddings regularly.
  • Proper disposal of faeces.

Round worms (Askers)

They live in the small intestine.

They feed on blood and digested food.

It is 20cm-30cm long.

Children with round worms have large swollen bellies.

round worm

How round worms spread

  • Through eating unwashed fruits and raw vegetables.
  • Eating food with dirty hands.
  • Eating contaminated food.
  • Children picking up things from the ground and putting them in the mouth.

Effects of round worm infection 

  • They can lead to intestinal obstruction.
  • When the patient vomits, the worms cause swelling in the voice box.
  • It leads to general itching of the body.
  • They lead to indigestion.
  • Round worms may cause malnutrition such as kwashiorkor.

Signs of round worm infection

  1. Itching around the body.
  2. Swollen bellies.

Symptoms of round worm infection

  1. Indigestion

Prevention of round worms

  1. Regular deworming.
  2. Use of drying racks for utensils.
  3. Proper disposal of human faeces.
  4. Wash hands before eating food.
  5. Wash hands after visiting the latrine.
  6. Protect food from houseflies by keeping it covered.
  7. Wash fruits and vegetables before eating them.

SIGNS AND SYMPTOMS OF PARASITES IN THE BODY 

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