Carlos III hospital , a Catholic nurse 's aide , is considered free of Ebola virus . two previous tests showed only a `` background '' level of Ebola . She will still remain hospitalized for weeks or days .
Teresa Romero Ramos , a Spanish nurse 's aide , is considered free of Ebola virus . Two previous tests showed only a `` background '' level of Ebola . She will still remain hospitalized for days or weeks .