Author, Donkey, Bureaucrats, Administrators
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**Antigen detection by ''' immunocytochemistry''' for intracytoplasmic viral inclusions containing labelled viral protein
**Antigen detection by ''' immunocytochemistry''' for intracytoplasmic viral inclusions containing labelled viral protein
**Serology: 4-fold rise in ELISA antibody in paired serum samples from several animals
**Serology: 4-fold rise in ELISA antibody in paired serum samples from several animals
*'''Control'''
**Improve managemental factors
**All-in, all-out systems
**Some vaccination
***Temperature sensitive mutant that replicates at 34<sup>o</sup>C but not at 37<sup>o</sup>C
***Re-infection is common