CNN2: subjectpartBANNER=|=”banner-text screaming-banner-text banner-text-size–char-47″ data-analytics=”_list-hierarchical-xs_article_”>Single-dose vaccine is effective, data shows| ((lubuntu at wor3 89S7)))

|| Single-dose vaccine is effective, data shows ||=”banner-text screaming-banner-text banner-text-size–char-47″ data-analytics=”_list-hierarchical-xs_article_”>Single-dose vaccine is effective, data shows