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Hypobiosis or Inhibited
Development
• A survival mechanism of worms
• They ceases development in the host in the early
stages soon after infection
• Is a mechanism to evade unfavourable
environmental conditions for larval development
on pasture
• When conditions improve they reactivate.
• Usually stay inhibited for one season eg. winter
• Evade the host’s immune response
• All trichostrongylid worms can