|| screaming-banner-text banner-text-size–char-47″ data-analytics=”_list-hierarchical-xs_article_”> Johnson & Johnson halts Covid-19 vaccine trial after unexplained illness ||=”banner-text screaming-banner-text banner-text-size–char-47″ data-analytics=”_list-hierarchical-xs_article_”>Johnson & Johnson halts Covid-19 vaccine trial after unexplained illness