Table 8 Agents to be considered in the differential diagnosis of lungworm disease
Disease type | Pathogen |
|---|---|
Viral pathogens | Infectious bovine rhinotracheitis Respiratory syncytial virus—can be primary cause in dairy cattle Parainfluenza 3 Bovine viral diarrhoea virus—primary cause and/or immune suppression Coronavirus—often present but pathogenicity unknown |
Bacterial pathogens | Mannheimia haemolytica Pasteurella multocida Haemophilus somnus Mycoplasma bovis |
Others | Farmers’ lung (i.e. hypersensitivity to spores of Micropolyspora faeni) Dusty feed rhinotracheitis (i.e. feeding fine-particled feed in a badly ventilated parlour) Chlamydia pecorum—detected by PCR, but pathogenicity unknown Anaplasma phagocytophilum |