Study compares the decline in effectiveness for Moderna, Pfizer, and Janssen vaccines and consequences for mortality.

Original study: SARS-CoV-2 vaccine protection and deaths among US veterans during 2021 – Science

News release: Breakthrough Infection Study Compares Decline in Vaccine Effectiveness and Consequences for Mortality – Public Health Institute

Commentary on Twitter

A new study of more than 780,000 United States Veterans shows that, although vaccination remains protective against #SARSCoV2 infection, protection waned as the Delta variant emerged in America.

Read more: https://t.co/8qRlKE107H #ScienceResearch pic.twitter.com/XmDQ7frIlT

— Science Magazine (@ScienceMagazine) November 4, 2021