Difference between revisions of "Streptococci"
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| + | |linkpage =Bacteria | ||
| + | |linktext =BACTERIA | ||
| + | |pagetype=Bugs | ||
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| + | <br> | ||
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| + | ===Overview=== | ||
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| + | *Cause suppurative infections in many different animals | ||
| + | *Cause mastitis, metritis, polyarthritis, meningitis | ||
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| + | ===Characteristics=== | ||
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| + | *Gram positive cocci forming chains | ||
| + | *Catalase negative, facultative anaerobes | ||
| + | *Fastitidious - require enriched media such as blood or serum | ||
| + | *Small haemolytic, translucent colonies | ||
| + | *Catalase negative | ||
| + | *Susceptible to desiccation | ||
| + | *Commensals on mucous membranes of upper respiratory and lower urogenital tract | ||
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| + | ===Pathogenicity=== | ||
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| + | ===Clinical infections=== | ||
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| + | ===Diagnosis=== | ||
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| + | ===Treatment=== | ||
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| + | ===Control=== | ||
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| + | *Haemolytic streptococci of Lancefield group C are common inhabitants of the equine nasopharynx | ||
| + | *''Streptococcus zooepidemicus'' and ''S. equisimilis'' are usually non-pathogenic | ||
| + | *''S. equi'' is more pathogenic and is the cause of [[Respiratory Bacterial Infections - Pathology#Strangles|strangles]] with [[Nasal Cavity Inflammatory - Pathology#Strangles|rhinitis]], [[Nasopharynx Inflammatory - Pathology|pharyngitis]], lymphadenitis, [[Muscles Inflammatory - Pathology#Abscesses|myositis]] | ||
| + | *''S. equi'' may be involved in [[Bacterial skin infections - Pathology#Systemic bacterial infections|cutaneous lesions]] | ||
| + | [[Respiratory Bacterial Infections - Pathology#In Horses|URT inflammation in horses]] | ||
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| + | * [[Peritoneal Cavity Inflammatory - Pathology#In pigs|peritonitis in pigs]] | ||
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| + | *''S. zooepidemicus'' can cause similar signs to [[Respiratory Bacterial Infections - Pathology#Strangles|strangles in horses]], may accompany [[Bronchi and Bronchioles Inflammatory - Pathology#Chronic obstructive pulmonary disease (COPD)|COPD]] | ||
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| + | *May cause [[Paranasal Sinuses Inflammatory - Pathology|sinusitis]] in horses | ||
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| + | * Can cause vascular fragility, leading to [[General Pathology - Haemostasis#Haemorrhagic Disease Due To Vascular Fragility|haemorrhagic disease]]. | ||
| + | *Secondary invadors after [[Respiratory Viral Infections - Pathology#Equine influenza|Equine influenza]] | ||
| + | *''S. suis'' in [[Respiratory Bacterial Infections - Pathology#Streptococcal pneumonia|pneumonia]] of pigs | ||
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| + | *In [[Pleural Cavity & Membranes Inflammatory - Pathology#Pyothorax (Thoracic empyema)|pyothorax]] | ||
| + | * In [[Bones Inflammatory - Pathology#Osteomyelitis|osteomyelitis]] | ||
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| + | *In infectious [[Joints Inflammatory - Pathology#In Sheep|arthritis of sheep]], [[Joints Inflammatory - Pathology#In Cattle|arthritis in calves]], [[Joints Inflammatory - Pathology#In Horses|arthritis in horses]] and [[Joints Inflammatory - Pathology#In Pigs|arthritis in pigs]] | ||
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| + | *In horses sometimes [[Muscles Degenerative - Pathology#Ischaemia|purpura haemorrhagica]] follows, especially during recovery from [[Respiratory Bacterial Infections - Pathology#Strangles|strangles]] | ||
| + | *In [[Cavity & Gingiva - Pathology#Catarrhal Stomatitis|catarrhal stomatitis]] | ||
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| + | *In [[Bacterial skin infections - Pathology#Deep pyoderma|deep pyoderma]] and subcutaneous abscesses | ||
Revision as of 11:33, 29 December 2008
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This article has been peer reviewed but is awaiting expert review. If you would like to help with this, please see more information about expert reviewing. |
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Overview
- Cause suppurative infections in many different animals
- Cause mastitis, metritis, polyarthritis, meningitis
Characteristics
- Gram positive cocci forming chains
- Catalase negative, facultative anaerobes
- Fastitidious - require enriched media such as blood or serum
- Small haemolytic, translucent colonies
- Catalase negative
- Susceptible to desiccation
- Commensals on mucous membranes of upper respiratory and lower urogenital tract
Pathogenicity
Clinical infections
Diagnosis
Treatment
Control
- Haemolytic streptococci of Lancefield group C are common inhabitants of the equine nasopharynx
- Streptococcus zooepidemicus and S. equisimilis are usually non-pathogenic
- S. equi is more pathogenic and is the cause of strangles with rhinitis, pharyngitis, lymphadenitis, myositis
- S. equi may be involved in cutaneous lesions
- S. zooepidemicus can cause similar signs to strangles in horses, may accompany COPD
- May cause sinusitis in horses
- Can cause vascular fragility, leading to haemorrhagic disease.
- Secondary invadors after Equine influenza
- S. suis in pneumonia of pigs
- In pyothorax
- In osteomyelitis
- In infectious arthritis of sheep, arthritis in calves, arthritis in horses and arthritis in pigs
- In horses sometimes purpura haemorrhagica follows, especially during recovery from strangles
- In catarrhal stomatitis
- In deep pyoderma and subcutaneous abscesses