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*Primary and secondary pathogen
 
*Primary and secondary pathogen
 
*Responsible for secondary infections following primary viral and mycoplasmal infections, especially in the lungs, for example during pig enzootic pneumonia
 
*Responsible for secondary infections following primary viral and mycoplasmal infections, especially in the lungs, for example during pig enzootic pneumonia
      
*Typa A
 
*Typa A
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