Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2023 Jun 28;13(6):e061643. doi: 10.1136/bmjopen-2022-061643

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

PMC Copyright notice

Comparison of the Kaplan-Meier survival curves of adverse events following immunisation (AEFI) onset between first and second doses of COVISHIELD vaccination. A Kaplan-Meier curve that demonstrates the onset of AEFI after COVISHIELD vaccination. After first-dose vaccination, the median time to onset of AEFI was 19.0 (95% CI 18.0 to 20.0) hours. The median time to onset after the second-dose vaccination could not be estimated. There was a significantly higher incidence of adverse events after the first-dose vaccination than after the second-dose vaccination (p<0.00).