This fact sheet, published by the United States Department of Agriculture, provides information on Exotic Newcastle Disease. The second page is the report published in Spanish. "Exotic Newcastle disease (END) is a deadly poultry disease that can spread quickly, killing all your birds. […] END spreads through direct contact between healthy birds and the bodily discharges from sick birds. The disease affects almost all birds and poultry, even vaccinated poultry. END virus can be picked up on shoes, clothing, tools, vehicles and tires, and people who have come in contact with sick birds."
Program Aid No. 1768
United States Department of Agriculture: http://www.usda.gov/wps/portal/usda/usdahome