Hog cholera 

#GS3 #Diseases 

News : Suspected hog cholera has killed at least a dozen pigs across two districts of Meghalaya. 

  • This coincided with the death of more than 2,900 pigs in Assam due to African swine fever (AFS), a first in the Indian subcontinent. 
  • Officials in Meghalaya have allegedly been silent on a possible outbreak of hog cholera, also known as classical swine fever. 

Hog Cholera or Classical Swine Fever 

  • Classical swine fever is a highly contagious, viral disease of swine that in its most virulent form causes morbidity and mortality approaching 100%. Viral strains of low to moderate virulence cause infections with a gradient of severity, some clinically inapparent. 
  • Classical swine fever is a Pestivirus (family Flaviviridae), related to the virus of bovine virus diarrhea (BVD) and sheep’s border disease (BD).  
  • Strains of CSF vary greatly in antigenicity and virulence. Virulence can increase in a single passage through pigs.  
  • Strains of high virulence cause classic outbreaks with high morbidity and mortality.  
  • Strains of moderate virulence cause subacute or chronic infections. Strains of low virulence can cause mild or inapparent infection, reproductive failure or neonatal losses.  
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