KNX News Chief Correspondent Charles Feldman takes us in depth into how much doctors have learned about the COVID-19 virus and how much more they still need to figure out. Dr. Maureen Tierney is the Chair of the Department of Clinical Research and Public Health at Creighton University. She was the principal investigator of a 2021 CDC-commissioned study on the impact of COVID. 

<p>KNX News Chief Correspondent Charles Feldman takes us in depth into how much doctors have learned about the COVID-19 virus and how much more they still need to figure out. Dr. Maureen Tierney is the Chair of the Department of Clinical Research and Public Health at Creighton University. She was the principal investigator of a 2021 CDC-commissioned study on the impact of COVID. </p>
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