The Johnson & Johnson vaccine was ~85% effective at preventing 'severe' covid (requiring medical intervention but not hospitalization) and 61% - 65% effective a

The Johnson & Johnson vaccine was ~85% effective at preventing 'severe' covid (requiring medical intervention but not hospitalization) and 61% - 65% effective at preventing 'mild and moderate' covid in areas with the variants that are now the most prevalent in the US. I would assume vaccinated people that are sick enough to be having symptoms are probably also infectious.