Product-specific COVID-19 vaccine effectiveness against secondary infection in close contacts, Navarre, Spain, April to August 2021

Single-dose administration and the influence of the timing of the booster dose on immunogenicity and efficacy of ChAdOx1 nCoV-19 (AZD1222) vaccine: a pooled analysis of four randomised trials

(2021) Merryn Voysey et al.   LANCET

Theoretical framework for retrospective studies of the effectiveness of SARS-CoV-2 vaccines

(2021) Joseph A. Lewnard et al.   EPIDEMIOLOGY

Impact and effectiveness of mRNA BNT162b2 vaccine against SARS-CoV-2 infections and COVID-19 cases, hospitalisations, and deaths following a nationwide vaccination campaign in Israel: an observational study using national surveillance data

(2021) Eric J Haas et al.   LANCET

Safety and Efficacy of Single-Dose Ad26.COV2.S Vaccine against Covid-19

(2021) Jerald Sadoff et al.   NEW ENGLAND JOURNAL OF MEDICINE

Effectiveness of the Pfizer-BioNTech and Oxford-AstraZeneca vaccines on covid-19 related symptoms, hospital admissions, and mortality in older adults in England: test negative case-control study

(2021) Jamie Lopez Bernal et al.   BMJ-British Medical Journal

Effectiveness of COVID-19 vaccines in preventing SARS-CoV-2 infection and hospitalisation, Navarre, Spain, January to April 2021

(2021) Iván Martínez-Baz et al.   Eurosurveillance

Vaccine effectiveness against SARS-CoV-2 transmission and infections among household and other close contacts of confirmed cases, the Netherlands, February to May 2021

(2021) Brechje de Gier et al.   Eurosurveillance

Immunogenicity and reactogenicity of BNT162b2 booster in ChAdOx1-S-primed participants (CombiVacS): a multicentre, open-label, randomised, controlled, phase 2 trial

(2021) Alberto M Borobia et al.   LANCET

Immunogenicity and reactogenicity of heterologous ChAdOx1 nCoV-19/mRNA vaccination

(2021) Tina Schmidt et al.   NATURE MEDICINE

Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant

(2021) Jamie Lopez Bernal et al.   NEW ENGLAND JOURNAL OF MEDICINE

Comparative Effectiveness of Moderna, Pfizer-BioNTech, and Janssen (Johnson & Johnson) Vaccines in Preventing COVID-19 Hospitalizations Among Adults Without Immunocompromising Conditions — United States, March–August 2021

(2021) Wesley H. Self et al.   MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT

Efficacy and Safety of the mRNA-1273 SARS-CoV-2 Vaccine

(2020) Lindsey R. Baden et al.   NEW ENGLAND JOURNAL OF MEDICINE

Safety and Efficacy of the BNT162b2 mRNA Covid-19 Vaccine

(2020) Fernando P. Polack et al.   NEW ENGLAND JOURNAL OF MEDICINE