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African Swine Fever (ASF), Symptoms, Transmission and Prevention

Context: A recent outbreak of African Swine Fever has been reported in Thrissur, Kerala.

African Swine Fever (ASF)

  • African Swine Fever is a highly contagious viral disease affecting both domestic and wild pigs.
  • The causative agent of African Swine Fever is a large, enveloped, double-stranded DNA virus, classified as the only member of the genus Asfivirus within the Asfarviridae family.
  • The virus infects the macrophages(immune system cells) in lymph nodes and major organs (such as liver, kidney, etc.)

African Swine Fever (ASF), Symptoms, Transmission and Prevention_4.1

Symptoms of African Swine Fever

  • High fever, loss of appetite, weakness.
  • Reddened or darkened skin, particularly ears and snout.
  • Diarrhea, vomiting, coughing, difficulty breathing.
  • Abortions, stillbirths, weak piglets.

Transmission

  • Direct contact with infected animals
  • Indirect contact through ingestion of products from infected animals, contact with contaminated clothing, vehicles or equipment
  • Bites by infectious soft ticks (where present)

Other Related Information for African Swine Fever

  • The virus can survive for extended periods in pork and pork products.
  • African Swine Fever is endemic to sub-Saharan Africa but has spread to other regions, including Asia and Europe.
  • This virus is harmless to humans, pork and pork products from infected pigs are safe for human consumption.
  • There is no cure or precaution available for the infection yet.
  • Controlling the spread of African Swine Fever primarily involves culling the infected animals.
  • No cure or vaccine exists, so prevention is crucial.
  • ASF has never been found in the United States and many countries are working hard to keep it out.
  • Biosecurity measures on farms are essential to prevent the spread.
  • Properly cooked pork products are safe to eat.

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A highly contagious and deadly viral disease affecting domestic and wild pigs. Mortality rate can be as high as 100%.

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