Add image: 2019-10-center-of-excellence-thumb

Author: christymelucci

content/about/news/headless/2019_10_CenterOfExcellence.md

@@ -2,7 +2,7 @@
 date: 2019-10-01
 title: Delphi named a Center of Excellence
 category: accomplishment
-image: placeholder-thumb.jpg
+image: 2019-10-center-of-excellence-thumb.jpg
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 We were just named a national [Center of Excellence for Influenza Forecasting](https://www.cmu.edu/news/stories/archives/2019/october/cdc-funds-carnegie-mellons-flu-forecasting-center.html) by the CDC, one of two nationally. This is a 5 year designation.