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Medical Definition of Chronic respiratory disease
1. A common and serious disease of the respiratory tract of chickens caused by the bacterium Mycoplasma gallinarum; secondary infection with Escherichia coli is common. (05 Mar 2000)
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1. A common and serious disease of the respiratory tract of chickens caused by the bacterium Mycoplasma gallinarum; secondary infection with Escherichia coli is common. (05 Mar 2000)