| epidemiological associations between mycoplasma hyopneumoniae and actinobacillus pleuropneumoniae antibody titers and lung lesions in prince edward island swine herds. | a survey of anteroventral (av) lung lesions, pleuritis and serology for mycoplasma hyopneumoniae (mh) and actinobacillus pleuropneumoniae (ap) was conducted on a minimum of 25 slaughter hogs from each of 18 randomly sampled prince edward island farms (producing over 1,000 market hogs per year). the data were analyzed to evaluate the potential role of these two agents as risk factors for the two conditions, using crude and multivariable techniques, as well as individual and herd data. anteroventr ... | 1991 | 1790490 |