A study finds the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/VSV-EBOV" id="mwAdU" rel="mw:WikiLink" title="VSV-EBOV">VSV-EBOV</a> vaccine against the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Ebola_virus" id="mwAdY" rel="mw:WikiLink" title="Ebola virus">Ebola virus</a> between 70 and 100% effective, thus making it the first proven vaccine against the disease.