Does the Johnson & Johnson Covid booster shot prevent severe infection?

Yes, the Johnson & Johnson Covid booster shot has been shown to significantly reduce the risk of severe COVID-19 infection. According to a recent clinical trial, which studied over 40,000 participants in five countries around the world, this booster vaccine was found to be 85?fective at preventing severe infection overall and 86?fective at preventing emergency hospitalization due to COVID-19. This is even higher than some other already approved vaccines such as Moderna and Pfizer's mRNA vaccines which showed about two-thirds efficacy against symptomatic illness in their respective trials. The study also found that this vaccine had immunity after only one dose instead of two doses like its peers—which implies greater ease for individuals who may have difficulty obtaining both injections. Furthermore, it was 100?fective against death from COVID-19 as well as 100 percent efficacious at protecting people from medical visits with symptoms including fever within 42 days following vaccination.  All of these findings support the conclusion that Johnson & Johnson's Covid booster shot is an excellent choice; it reduces the risk of serious illness due to coronavirus while being easier and more convenient than many other options.