The first clinical trials of <a href="https://en.wikipedia.org/wiki/Jonas_Salk" id="mwxg" rel="mw:WikiLink" title="Jonas Salk">Jonas Salk</a>'s <a href="https://en.wikipedia.org/wiki/Polio_vaccine" id="mwxw" rel="mw:WikiLink" title="Polio vaccine">polio vaccine</a> begin in <a href="https://en.wikipedia.org/wiki/Fairfax_County,_Virginia" id="mwyA" rel="mw:WikiLink" title="Fairfax County, Virginia">Fairfax County, Virginia</a>.<sup about="#mwt58" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-10"}}' id="cite_ref-10" rel="dc:references" typeof="mw:Extension/ref"><a href="./April_26#cite_note-10" id="mwyQ" style="counter-reset: mw-Ref 10;"><span class="mw-reflink-text" id="mwyg">[10]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-10"><cite about="#mwt55" class="citation web cs1" id="mwBl0"><a class="external text" href="https://www.seattletimes.com/nation-world/the-school-that-pioneered-polio-shots-will-give-kids-the-covid-vaccine-too/" id="mwBl4" rel="mw:ExtLink nofollow">"The school that pioneered polio shots will give kids the coronavirus vaccine, too"</a>. <i id="mwBl8">The Seattle Times</i>. 2021-11-08<span class="reference-accessdate" id="mwBmA">. Retrieved <span class="nowrap" id="mwBmE">2022-01-10</span></span>.</cite><span about="#mwt55" class="Z3988" id="mwBmI" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=The+Seattle+Times&amp;rft.atitle=The+school+that+pioneered+polio+shots+will+give+kids+the+coronavirus+vaccine%2C+too&amp;rft.date=2021-11-08&amp;rft_id=https%3A%2F%2Fwww.seattletimes.com%2Fnation-world%2Fthe-school-that-pioneered-polio-shots-will-give-kids-the-covid-vaccine-too%2F&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AApril+26"></span></span>