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WASHINGTON - SEPTEMBER 9:Dr. Francis Collins, Director of the National Institutes of Health, is seen after Senate Health, Education, Labor, and Pensions Committee hearing to discuss vaccines and protecting public health during the coronavirus pandemic on September 9, 2020 in Washington DC. Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, recently said a vaccine likely won't be available until late this year at the soonest. (Photo by Greg Nash- Pool/Getty Images)

WASHINGTON - SEPTEMBER 9:Dr. Francis Collins, Director of the National Institutes of Health, is seen after Senate Health, Education, Labor, and Pensions Committee hearing to discuss vaccines and protecting public health during the coronavirus pandemic on September 9, 2020 in Washington DC.  Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, recently said a vaccine likely won't be available until late this year at the soonest. (Photo by Greg Nash- Pool/Getty Images)