Changes

*Persistent respiratory infection caused by [[Chlamydia and Chlamydophila species|''Chlamydia psittaci (felis)'']]

*Persistent respiratory infection caused by [[Chlamydia and Chlamydophila species|''Chlamydia psittaci (felis)'']]

*Mild conjunctivitis, serous purulent [[Nasal cavity - inflammatory#Infectious causes of rhinitis|rhinitis]] and conjunctivitis, in severe cases mild [[Lungs - inflammatory#Bronchointerstitial pneumonia|bronchointerstitial pneumonia]] - feline pneumonitis

*Mild conjunctivitis, serous purulent [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|rhinitis]] and conjunctivitis, in severe cases mild [[Lungs - inflammatory#Bronchointerstitial pneumonia|bronchointerstitial pneumonia]] - feline pneumonitis

===[[Mycoplasmas|''Mycoplasma felis'']]===

===[[Mycoplasmas|''Mycoplasma felis'']]===

*Haemolytic streptococci of Lancefield group C are common inhabitants of the equine nasopharynx

*Haemolytic streptococci of Lancefield group C are common inhabitants of the equine nasopharynx

*''Streptococcus zooepidemicus'' and ''S. equisimilis'' are usually non-pathogenic

*''Streptococcus zooepidemicus'' and ''S. equisimilis'' are usually non-pathogenic

*Typically [[Nasal cavity - inflammatory#Infectious causes of rhinitis|suppurative rhinitis]], [[Nasopharynx Inflammatory - Pathology#Infectious causes of pharyngitis|pharyngitis]] and '''lymphadenitis''' of the lymph nodes of the head and neck that drain the upper respiratory tract, these lymph nodes often rupture and discharge pus 2-3 weeks after the onset of infection  

*Typically [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|suppurative rhinitis]], [[Nasopharynx Inflammatory - Pathology#Infectious causes of pharyngitis|pharyngitis]] and '''lymphadenitis''' of the lymph nodes of the head and neck that drain the upper respiratory tract, these lymph nodes often rupture and discharge pus 2-3 weeks after the onset of infection  

*Infection with ''Streptococcus equi'' occurs after contact with contaminated feed, water bowls or an infected carrier [[Hindgut Fermenters - Horse - Anatomy & Physiology|horse]]

*Infection with ''Streptococcus equi'' occurs after contact with contaminated feed, water bowls or an infected carrier [[Hindgut Fermenters - Horse - Anatomy & Physiology|horse]]

*Organism remains viable in environment for months

*Organism remains viable in environment for months

===''Streptococcus equi subsp. zooepidemicus''===

===''Streptococcus equi subsp. zooepidemicus''===

*Causative agent [[Streptococci|''Streptococcus equi subsp. zooepidemicus'']]

*Causative agent [[Streptococci|''Streptococcus equi subsp. zooepidemicus'']]

*Can infect the respiratory tract ([[Nasal cavity - inflammatory#Infectious causes of rhinitis|nasal cavity]], [[Paranasal Sinuses Inflammatory - Pathology#Infectious causes of sinusitis|paranasal sinuses]], [[Trachea - inflammatory#Infectious causes of tracheitis|trachea]] and [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchi/bronchioles]])

*Can infect the respiratory tract ([[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|nasal cavity]], [[Paranasal Sinuses Inflammatory - Pathology#Infectious causes of sinusitis|paranasal sinuses]], [[Trachea - inflammatory#Infectious causes of tracheitis|trachea]] and [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchi/bronchioles]])

*URT infection can be indistinguishable clinically from Strangles, but does not cause suppurative lymphadenitis (cf: ''S.equi subsp. equi'')

*URT infection can be indistinguishable clinically from Strangles, but does not cause suppurative lymphadenitis (cf: ''S.equi subsp. equi'')

*Exists in eastern Europe and Asia

*Exists in eastern Europe and Asia

*Notifiable in UK

*Notifiable in UK

*Characterised by multiple small submucosal [[Nasal cavity - inflammatory#Infectious causes of rhinitis|nasal nodules]] which liquefy and ulcerate  

*Characterised by multiple small submucosal [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|nasal nodules]] which liquefy and ulcerate  

**Cores of neutrophils surrounded by a rim of macrophages and [[General Pathology - Chronic Inflammation#Granulation tissue|granulation tissue]]  

**Cores of neutrophils surrounded by a rim of macrophages and [[General Pathology - Chronic Inflammation#Granulation tissue|granulation tissue]]  

*In addition may have similar nodules in [[Lungs - inflammatory#Infectious causes of pneumonia|lungs]], '''lymph nodes''' and '''cutaneous lymphatics'''   

*In addition may have similar nodules in [[Lungs - inflammatory#Infectious causes of pneumonia|lungs]], '''lymph nodes''' and '''cutaneous lymphatics'''   

*Clinical signs: fever and head/ neck lymphadenitis, [[Nasal cavity - inflammatory#Infectious causes of rhinitis|rhinitis]]

*Clinical signs: fever and head/ neck lymphadenitis, [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|rhinitis]]

===''Rhodococcus equi''===

===''Rhodococcus equi''===

*An unclassified bacteria that can't be grown in culture

*An unclassified bacteria that can't be grown in culture

*Colonises ciliated epithelium in '''rodents''' and ruminants

*Colonises ciliated epithelium in '''rodents''' and ruminants

*Associated with [[Nasal cavity - inflammatory#Infectious causes of rhinitis|chronic lymphocytic rhinitis]], [[Trachea - inflammatory#Infectious causes of tracheitis|tracheitis]] and [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchitis]]

*Associated with [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|chronic lymphocytic rhinitis]], [[Trachea - inflammatory#Infectious causes of tracheitis|tracheitis]] and [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchitis]]

*Clinical disease in '''rabbits''' and '''rodents'''

*Clinical disease in '''rabbits''' and '''rodents'''

*Subclinical disease in ruminants

*Subclinical disease in ruminants

*In rapidly growing young pigs (4-12 weeks old)

*In rapidly growing young pigs (4-12 weeks old)

*Clinical signs

*Clinical signs

**Progressive facial deformity with [[Nasal cavity - inflammatory#Infectious causes of rhinitis|rhinitis]], catarrhal nasal discharge  

**Progressive facial deformity with [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|rhinitis]], catarrhal nasal discharge  

**Sneezing, coughing, can progress to dyspnoea and anorexia

**Sneezing, coughing, can progress to dyspnoea and anorexia

*Caused by [[Pasteurella species and Mannheimia haemolytica|''Pasteurella multocida'']], less commonly and/or [[Bordetella bronchiseptica and Bordetella avium|''B.bronchoseptica'']]

*Caused by [[Pasteurella species and Mannheimia haemolytica|''Pasteurella multocida'']], less commonly and/or [[Bordetella bronchiseptica and Bordetella avium|''B.bronchoseptica'']]

*Clinical signs (nasal discharge, sneezing) result from an acute to chronic [[Nasal cavity - inflammatory|rhinitis]]

*Clinical signs (nasal discharge, sneezing) result from an acute to chronic [[Nasal Cavity Inflammatory - Pathology|rhinitis]]

===''CAR bacillus''===

===''CAR bacillus''===

*As [[Respiratory Bacterial Infections - Pathology#CAR bacillus|in cattle]]

*As [[Respiratory Bacterial Infections - Pathology#CAR bacillus|in cattle]]