Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Time to first symptomatic COVID-19 event in STORM CHASER over 366 days. HR are from a proportional hazards model with Efron method, with p values from log-rank tests. The + symbols indicate a censored observation. CI confidence interval, HR hazard ratio. aIndicates the percentage of events within each group (AZD7442 and placebo) using the group N values as denominators, rather than the total population N for the cumulative incidence shown on the Y-axis
