b'Dr. Paul Offit is the director of the Vaccine Education Center and a professor of pediatrics in the Division of Infectious Diseases at Children\\u2019s Hospital of Philadelphia. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. A. Desmond and P.A. Offit. On the Shoulders of Giants \\u2014 From Jenner\\u2019s Cowpox to mRNA Covid Vaccines. N Engl J Med 2021;384:1081-1083.'