Sunday, April 12, 2020, is the 65th anniversary of the announcement that the killed-virus polio vaccine--developed here at the University of Pittsburgh--was safe and effective. To mark the occasion, we bring you the perspective and advice of someone who has faced two frightening disease outbreaks up close. Meet David Harding, a Pitt instructor in the School of Health and Rehabilitation Sciences. VIDEO SLIDESHOW: https://vimeo.com/406209306