Correction: Intravesical BCG in patients with non-muscle invasive bladder cancer induces trained immunity and decreases respiratory infections ============================================================================================================================================== van Puffelen JH, Novakovic B, van Emst L, *et al*. Intravesical BCG in patients with non-muscle invasive bladder cancer induces trained immunity and decreases respiratory infections. *J ImmunoTher Cancer* 2023; **11:** e005518. doi: 10.1136/jitc-2022-005518 This article has been corrected since it was first published to indicate that LABJ and SHV are joint senior authors. * © 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. [http://creativecommons.org/licenses/by-nc/4.0/](http://creativecommons.org/licenses/by-nc/4.0/) 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/](http://creativecommons.org/licenses/by-nc/4.0/).