Difference between revisions of "Category:Actinobacillus species"

Revision as of 11:22, 10 May 2010

Mainly pathogens of farm animals
Commensals of mucosa of upper respiratory tract and oral cavity
Cannot survive long in the environment, therefore carrier animals are important in their transmission
Cause granulomatous inflammation

Epididymitis in young rams (4-8 months)
Polyarthritis in lambs
Organism found in prepuce
Opportunistic infection causing abscesses in epididymides
May be purulent discharge onto scrotal skin
Specimens cultured on blood agar and incubated aerobically for 1-3 days produce pin-point haemolytic colonies which are catalase-positive; no growth on MacConkey agar

The following 6 pages are in this category, out of 6 total.

@@ Line 22: / Line 22: @@
 ''[[Actinobacillus equuli]]''
+''[[Actinobacillus suis]]''
-===''Actinobacillus suis''===
-*May be present in upper respiratory tract of sows
-*Pathogenicity and clinical signs:
-**Infection of piglets via aerosol or possibly skin abrasions
-**Fatal septicaemia in piglets 1-8 weeks old
-**Mortality up to 50% in some litters
-**Fever, respiratory distress, prostration and paddling of forelimbs seen in piglets
-**Petechial and ecchymotic haemorrhages in many organs
-**Interstitial pneumonia, pleuritis, meningoencephalitis, myocarditis and arthritis
-**Causes abscesses in joints and lungs of older pigs
-**Carried in the nasopharynx of pigs and nose of horses
-**Carriage may confer immunity to the more severe pleuropneumonia
-*Diagnosis:
-**Specimens cultured on blood agar and MacConkey agar for 1-3 days
-**Sticky haemolytic colonies
-**Pink, lactose-fermenting colonies on MacConkey agar
-*Treatment and control:
-**Bacteria usually susceptible to ampicillin, carbenicillin, potentiated sulphonamides and tetracyclines
-**Disinfect contaminated pens
-*Other animals:
-**Septicaemia and pneumonia in foals
-**Pneumonia in pigs and horses