Yesterday in the New England Journal of Medicine, two more studies confirmed high rates of vaccine effectiveness (VE), even against severe disease, and the vaccines' potential to prevent disease transmission.

The VE study used a test-negative design to look at COVID-19 vaccination in US adults 50 years and older, calculating a VE of 89% against COVID hospitalization, 90% against COVID-related intensive care unit (ICU) admission, and 91% against COVID-related emergency department (ED) or urgent care clinic (UCC) visits.

The second study suggested that, among Scottish households with a fully vaccinated healthcare worker, COVID infection risk dropped 54% for the other households members compared with households whose healthcare workers remained unvaccinated.

Read more at CIDRAP...