The <a href="https://en.wikipedia.org/wiki/Polio_vaccine" id="mwAQw" rel="mw:WikiLink" title="Polio vaccine">polio vaccine</a> developed by <a href="https://en.wikipedia.org/wiki/Jonas_Salk" id="mwAQ0" rel="mw:WikiLink" title="Jonas Salk">Jonas Salk</a> is made available to the public.