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ID#:12806
Description:From the “Illustrated Manual for the Recognition and Diagnosis of Certain Animal Diseases”, published in 1982, by the Mexico-United States Commission for the Prevention of Foot and Mouth Disease, this photograph depicts a domesticated pig that was exhibiting symptoms indicative of African swine fever (ASF), which included bloody diarrhea, seen here as a bloody exudates on this pig’s buttocks.
African swine fever is caused by an enzootic DNA virus belonging to the family Asfarviridae. “It is sensitive to lipid solvents and ortho-phenylphenol disinfectant, but is resistant to strong acids and alkalies. ASF virus causes hemadsorption of swine red blood cells (RBC) in infected leukocyte , i.e., white blood cell (WBC) cultures,” which means that the RBCs adhere to the infected WBCs. “Incubation is between 5 and 15 days, and symptomatology includes fever, depression, lachrymal discharge, cough, diarrhea, and dehydration. Transmission is most common as a result of contact with infected , recovered or carrier pigs, and ingestion of contaminated or infected garbage, urine, feces, and carcasses. Experimental transmission has been achieved in Africa and Spain using infected ticks. Naturally-infected ticks were also found.”
High Resolution: Click here for hi-resolution image (18.35 MB)
Content Providers(s):CDC/ Dr. Jerry J. Callis, PIADC/Dr. Brian W.J. Mahy, CDC
Creation Date:1982
Photo Credit:
Links:Plum Island Animal Disease Center (PIADC) - United States Department of Agriculture (USDA) – Agricultural Research Service (ARS) – U.S. Department of Homeland Security
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.

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