We observed similar results when examining the time period corresponding to the dominance of the Delta variant (fig. S1). Specifically, among those with a positive PCR test on or after July 1, 2021, vaccination was protective against death, although with some differences by age and vaccine type.
For age <65 years, vaccine effectiveness against death (VE-D) was 81.7% (95% CI: 75.7% to 86.2%) for any vaccine; 73.0% (95% CI: 52.0% to 84.8%) for Janssen; 81.5% (95% CI: 70.7% to 88.4%) for Moderna; and 84.3% (95% CI: 76.3% to 89.7%) for Pfizer-BioNTech. For age ≥65 years, VE-D was 71.6% (95% CI: 68.6% to 74.2%) for any vaccine; 52.2% (95% CI: 37.2% to 63.6%) for Janssen; 75.5% (95% CI: 71.8% to 78.7%) for Moderna; and 70.1% (95% CI: 66.1% to 73.6%) for Pfizer-BioNTech.