What do we know about covid vaccines and preventing transmission?
BMJ 2022; 376 doi: https://doi.org/10.1136/bmj.o298 (Published 04 February 2022) Cite as: BMJ 2022;376:o298 Authors: Chris Stokel-Walker, Vaccines that work against SARS-CoV-2 have helped change the course of the pandemic by reducing illness and hospital admissions. But Chris Stokel-Walker asks what we know about their impact on preventing transmission. The range of vaccines developed in record time by pharmaceutical companies and research laboratories […]