Effectiveness of complete primary vaccination against COVID-19 at primary care and community level during predominant Delta circulation in Europe: multicentre study analysis by age-group, vaccine brand and time since vaccination, I-MOVE-COVID-19 and ECDC networks, July–August 2021Esther Kissling, Marta Valenciano, Iván Martínez‐Baz et al.|Unknown|2021Cited by 2