KEY POINTS
  • An investigator in Moderna's coronavirus vaccine trial told CNBC he is concerned political pressures could influence the regulatory approval process. 
  • "I think there's already plenty of evidence of political interference in science, so if that has happened up to now, why would it not happen again?" said Dr. Carlos del Rio of Emory University.
  • FDA chief Dr. Stephen Hahn has said he has "no intention" of overruling career scientists at the agency. 

Dr. Carlos del Rio, an investigator in Moderna's clinical trials, told CNBC on Thursday he is worried about political pressure interfering in the regulatory approval process for any potential coronavirus vaccine.  

"Politics have already impinged on science," del Rio said on "Power Lunch," referring to a pair of previous developments during the coronavirus pandemic that did not involve vaccine approvals.