COP27 Climate Change Conference: urgent action needed for Africa and the world.

Competing Interests: CZ receives consulting fees from the UK Health Alliance on Climate Change. PY receives honoraria from Novartis, bioMérieux, and Pfizer and receives advisory board fees from Pfizer and fees for serving on a DSMB from the US National Heart, Lung, and Blood Institute all unrelated to the topic of this Comment. JM is an unpaid Board member of the International Working Group for Health systems strengthening unrelated to the topic of this Comment. DO-A receives advisory board fees from Inovio Pharmaceuticals and is a member of the Board of Directors of GLICO Healthcare all unrelated to the topic of this Comment. The other authors declare no competing interests. This Comment is being published simultaneously in multiple journals (appendix). The full list of journals and supporting journals can be found on the BMJ website.