apple (IMAGE) Virginia Tech Caption Researchers at the Alson H. Smith Jr. Agricultural and Extension Research Center are studying methods to fight fire blight, a contagious and often deadly disease that affects apples and other pome fruits, such as Asian pears. Photo by Sam Dean for Virginia Tech. Credit Virginia Tech Usage Restrictions Credit Virginia Tech License Original 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.