4817
Both in the Federal Republic of Germany and in some neighbouring countries the epizootic situation of Aujeszky ' s disease has been unsatisfactory for a long time , especially in areas with a high pig density .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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