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Sen. Rand Paul, R-Ky., and Dr. Anthony Fauci got into a heated exchange marked with personal attacks during a Tuesday hearing dealing with the response to COVID-19 variants.

Paul, a fierce critic of the National Institute of Allergy and Infections Diseases director, accused Fauci of playing a role in smearing doctors from Harvard, Oxford and Stanford who had positions different from his own.

REPS. COMER, JORDAN EXPOSE NEW FAUCI EMAILS THEY SAY POINT TO COVID-19 LAB LEAK ‘COVER UP’

“In an email exchange with Dr. [Francis] Collins, you conspire, and I quote here directly from the email, to ‘create a quick and devastating published takedown’ of three prominent epidemiologists from Harvard, Oxford and Stanford,” Paul said.