West African Ebola virus epidemic
... that during the West African Ebola virus epidemic as many as 15 different vaccines were in development?
... that during the <b id="mwAkc"><a class="mw-redirect" href="./West_African_Ebola_virus_epidemic" id="mwAkg" rel="mw:WikiLink" title="West African Ebola virus epidemic">West African Ebola virus epidemic</a></b> as many as 15 different vaccines were in development?