J&J booster slashes Omicron hospitalisations -S.African study

A booster dose of Johnson & Johnson Inc's (JNJ.N) single-dose COVID-19 vaccine was 84% effective at preventing hospitalisation in South African healthcare workers who became infected as the Omicron variant spread, researchers said on Thursday. The real-world study, which has not been peer-reviewed, was based on a second dose of the J&J vaccine administered to 69,092 workers between Nov. 15 and Dec. 20.