Trichuris trichiura – Egg

  • Infective stage to human
  • Found in faecal specimens of infected human
  • Eggs not infective when passed; require development in soil for a few weeks
Diagnostic Features
  • Size: 54 µm x 22 µm (range: 49-65 µm x 20-29 µm)
  • Shape: Lemon or barrel shaped
  • Thick-shelled and yellow brown in colour
  • Colourless opercular plugs at each end
  • Has an unsegmented ovum