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Marek's Disease

Last Updated: March 05, 2008 | Related resource areas: Agrosecurity and Floods

Marek's disease is a highly contagious disease of poultry caused by a herpes virus. The disease is transmitted readily among chickens through direct contact with infected birds or through inhalation of contaminated dust. Although some birds recover from Marek's disease, the mortality rate is high.


Endemic Areas

Marek's disease is found worldwide.


Clinical Signs

  • Depression
  • Transient paralysis
  • Discolored or irregularly shaped iris
  • Weight loss
  • Sudden death


Treatment

There is no specific treatment for Marek's disease. Any bird suspected of having Marek's disease should be reported to the State Veterinarians or USDA Area Veterinarian in Charge immediately.


Prevention

A highly effective vaccine is available for Marek's disease. Marek's disease may be prevented by implementing a sound vaccination program and by following the USDA-APHIS Biosecurity for the Birds program.


Public Health

Marek's disease is not a public health threat.


Links

Marek's disease -Purdue University



More information:

agrosecurity, agrosecurity: animals

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