Classes of Nematodes

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Classes of Nematodes
2
Nematodes

• The four main Nematodes that we will concentrate
  on are
• Ascaris
• Pinworm
• Hookworm
• Trichina

3
Ascaris Worms

• Signs Symptoms
• Persistent cough
• Shortness of breath
• Wheezing
• Vague abdominal pain
• Nausea and vomiting
• Diarrhea or bloody stools

• Signs Symptoms
• Severe abdominal pain
• Fatigue
• Vomiting
• Weight loss
• A worm in vomit or stool
• A worm emerging from nose or mouth

The severity of the symptoms depends on how many
worms you have and how long you have had them.
4
Preventing Ascaris Infection

• The best defense is good hygiene and common
  sense. Follow these tips to avoid infection
• Practice good hygiene.
• Use care when traveling.

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Ascaris Pictures
6
Pinworm

• Signs Symptoms
• Itching around anus or vagina
• Upset stomach
• Loss of Appetite
• Irritability
• Restlessness
• Insomnia

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Pinworms Contd

• Can be prevented by having good personal hygiene.
• That said, it is more common in children than
  adults.
• Infection is spread by ingesting the eggs, not
  necessarily in food.

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Pinworm, Contd

• Adult pinworms reside in the intestine, and
  attach to the intestinal wall.
• Their eggs are not released in the feces, but
  instead they crawl and lay egg around the anus.
  This causes the skin to itch.
• When scratched the eggs are caught under
  fingernails and then transmitted to anyone in
  contact with the infected hand.
• Prevention WASH YOUR HANDS -- ALWAYS!!

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Pinworm Pictures
10
Hookworms

• Signs Symptoms
• Anemia (low blood iron)
• Bloody sputum (spit)
• Signs of intestinal irriation
• General ill health

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Hookworms, contd

• Recall they enter through the skin around your
  toes.
• So to prevent them
• Wear socks or shoes, or both!

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Hookworm Pictures
13
Trichina

• Signs Symptoms
• History of having eaten rare or uncooked pork
  (bear and other wild carnivores or omnivores)
• Abdominal Discomfort
• Cramping
• Diarrhea
• Muscle Pain (especially muscle pain with
  breathing, chewing, or using large muscles)
• Fever

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Trichina, Contd

• Prevention
• Cook your pig products like your life depends on
  it. Because it might!

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Trichina Pictures