Medical Definition of pleuropneumonia
1: pleurisy accompanied by pneumonia
2: a highly contagious pneumonia usually associated with pleurisy of cattle, goats, and sheep that is caused by bacterium of the genus Mycoplasma (especially M. mycoides)
3: a contagious often fatal respiratory disease especially of young pigs that is caused by a bacterium of the genus Actinobacillus (A. pleuropneumoniae)
4: pleurisy of horses that is often accompanied by pneumonia and is caused by various bacteria
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