Changes

*Tracheitis can occur as part of an extension of an upper or lower viral or bacterial respiratory infection

*Tracheitis can occur as part of an extension of an upper or lower viral or bacterial respiratory infection

**eg: [[Respiratory Viral Infections - Pathology#Infectious bovine rhinotracheitis (IBR)|IBR]], [[Respiratory Viral Infections - Pathology#Feline viral rhinotracheitis|FHV-1]],  [[Respiratory Viral Infections - Pathology#Equine rhinopneumonitis|EHV-1]], [[Orthomyxoviridae|influenza viruses]]

**eg: [[Respiratory Viral Infections - Pathology#Infectious bovine rhinotracheitis (IBR)|IBR]], [[Respiratory Viral Infections - Pathology#Feline viral rhinotracheitis|FHV-1]],  [[Respiratory Viral Infections - Pathology#Equine rhinopneumonitis|EHV-1]], [[Orthomyxoviridae|influenza viruses]]

**eg: [[Bordetella bronchiseptica and Bordetella avium|''Bordetella bronchiseptica'']], [[Streptococci|''Strep. equi.'' subsp. ''zooepidemicus/equi'']], [[Pasteurella species and Mannheimia haemolytica|''Pasturella multocida'']]

**eg: [[Bordetella bronchiseptica|''Bordetella bronchiseptica'']], [[Streptococci|''Strep. equi.'' subsp. ''zooepidemicus/equi'']], [[Pasteurella multocida|''Pasteurella multocida'']]

*May cause  

*May cause  

**Obstruction to airflow

**Obstruction to airflow