Changes

Jump to navigation Jump to search
1,007 bytes removed ,  20:17, 14 May 2010
no edit summary
Line 45: Line 45:  
*Inoculation of susceptible animals
 
*Inoculation of susceptible animals
   −
 
+
[[Rickettsia rickettsii]]
===Rocky Mountain spotted fever===
  −
 
  −
*Caused by ''Rickettsia rickettsii''
  −
*Affects humans and dogs
  −
*Various tick vectors, which acquire the organism from small mammals
  −
*Transovarial and trans-stadial transmission within the tick population
  −
*Organisms replicate in endothelial cells of infected dogs, cause vasculitis, increased vascular permeability and haemorrhage
  −
 
  −
*Clinical signs
  −
**Incubation period 2-10 days; course less than 2 weeks
  −
*Fever, depression, conjunctivitis, retinal haemorrhage, muscle and joint pain, coughing, dyspnoea, oedema of extremities
  −
*Neurological signs in dogs include stupor, ataxia, neck rigidity, seizures and coma
  −
*Death from cardiovascular, neurological or renal damage in severely-affected animals
  −
*Gross pathology includes haemorrhage, splenomegaly and lymphadenopathy
  −
 
  −
*Diagnosis
  −
**Rising antibody titre during an indirect fluorescent antibody test or ELISA
  −
**Thrombocytopenia and leukopenia during early phase
  −
 
  −
*Treatment and control
  −
**Tetracycline therapy for two weeks
  −
**Tick removal from dogs
       
Author, Donkey, Bureaucrats, Administrators
53,803

edits

Navigation menu