Ovine footrot most commonly occurs following introduction of sheep carrying Dichelobacter nodosus to a previously uninfected flock, or following the breakdown of “carrier” sheep in a previously affected flock (Whittington et al., 2016). 

History includes:

  • introduction of sheep or other ruminants or previous episodes of footrot, 
  • suitable pasture (often lush and improved, but can occur on unimproved pasture), and 
  • favourable weather conditions. 

Other risk factors include:

  • inadequate fencing, allowing sheep to stray
  • contact with infected sheep or infective material via contaminated paddocks, laneways, shared yards, sheds, or transport
  • breed of sheep (Merinos are more susceptible than other breeds)

Go back to: Introduction to Footrot Diagnosis