PHYLUM NEMATODA

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PHYLUM NEMATODA

• The Roundworms

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Characteristics
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• Contracted by eating food contaminated with eggs.
  
• People swallow the eggs when they put dirty hands
  or vegetables into their mouths.
• The eggs will hatch in the intestines, move to
  the bloodstream, then to the lungs where they are
  coughed up and swallowed to start the cycle again.

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• Contracted by walking barefoot on soil containing
  eggs.
• Larvae bore through feet
• Common in warm climates and areas of poor
  sanitation.

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• Contracted by eating food such as uncooked pork
• Cysts in meat release larvae which burrow through
  the intestines and into muscles.

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• Most common parasite of humans in the US
• Female lives in lower intestine. At night she
  migrates out of the anus to lay her eggs.
• Itching during sleep causes re-infection
• Eggs into mouth

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