Deer 2 (IMAGE) Penn State Caption In the US, chronic wasting disease spreads differently in the East than in the West, because deer numbers and densities are so much higher in the East, according to researchers, who are trying to unravel genetic nuances to understand where the disease is likely to show up. Credit Pennsylvania Game Commission 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.