Randy Prather, University of Missouri (IMAGE) University of Missouri-Columbia Caption In a new study, Prather and his scientific colleagues obtain more information about how a specific respiratory virus infects pigs. The virus costs farmers more than $800 million every year. Credit Randy Mertens/University of Missouri Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.