Bloomberg points this out: "particularly effective at stopping severe disease, preventing 85% of severe infections and 100% of hospitalizations and deaths" ( https://finance.yahoo.com/news/j-j-single-dose-vaccine-13045... ).
"Based on the result, J&J plans to file for an emergency-use authorization in the U.S. in early February. The drug giant’s top scientist said this month that he expects a clearance in March, and that it would have product ready to ship then."