How to vaccinate the world against covid-19

BMJ 2021; 372 doi: https://doi.org/10.1136/bmj.n211 (Published 05 February 2021)Cite this as: BMJ 2021;372:n211Read our latest coverage of the coronavirus outbreak In the scramble for covid-19 vaccines richer countries, predictably, have secured stocks first. With the headache of distribution on top of procurement, how will the world reach the herd immunity levels needed to defeat the virus? Chris Baraniuk reports When Senjuti Saha, a scientist