Foetal Pneumonia

• Especially foals and farm species
• Due to aspiration of amniotic fluid contaminated with meconium and bacteria
  • Secondary to fetal distress
  • Microscopic lesions of bronchopneumonia
  • Involves all lobes (versus postnatal bronchopneumonia)
• Haematogenous spread
  • Causes interstitial pneumonia
  • Often caused by Listeria monocytogenes, Salmonella spp. or Chlamydia psittaci
• In viral abortions
  • Cause bronchointerstitial pneumonia
  • E.g.: IBR, PI-3 and equine viral rhinopneumonitis