© Licensed to London News Pictures. 19/10/2021. London, UK. Nassima Larbi, a NHS vaccinator, holds a vial containing Comirnaty and Pfizer-BioNTech Covid-19 vaccine, at a vaccination centre, in north London. According to the experts, the Covid-19 booster jab uptake is too slow amid fears of further restrictions this winter and a rise in coronavirus cases in recent days. Photo credit: Dinendra Haria/LNP