23 February 1954 Posted on February 22, 2013 by Staff The first mass inoculation of children against polio with the Salk vaccine began in Pittsburgh, USA. Famous Words of Inspiration..."To dare is to lose one's footing momentarily. To not dare is to lose oneself." Soren Aabye Kierkegaard — Click here for more from Soren Aabye Kierkegaard Related posts: 14 September 1954 22 April 1954 23 February 2005