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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, captured during a swine's necropsy, this photograph depicts the grossly-pathologic appearance of a pig's heart affected by a case of acute African swine fever (ASF). The pericardial sac had been cut, revealing its fluid-filled interior, and the hemorrhagic appearance of the myocardium.
ASF 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. Organ pathology includes possible hemorrhages found on the epicardium and endocardium; lymph nodes may be hemorrhagic; enlargement of the spleen; petechial hemorrhages of the kidneys and urinary bladder occasionally are 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
CDC Organization
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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.