Effectiveness of ChAdOx1 vaccine in older adults during SARS-CoV-2 Gamma variant circulation in São Paulo

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

Evaluation of COVID-19 vaccination strategies with a delayed second dose

(2021) Seyed M. Moghadas et al.   PLOS BIOLOGY

Single-dose mRNA Vaccine Effectiveness Against Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), Including Alpha and Gamma Variants: A Test-negative Design in Adults 70 Years and Older in British Columbia, Canada

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Age-related immune response heterogeneity to SARS-CoV-2 vaccine BNT162b2

(2021) Dami A. Collier et al.   NATURE

COVID-19 in Amazonas, Brazil, was driven by the persistence of endemic lineages and P.1 emergence

(2021) Felipe Gomes Naveca et al.   NATURE MEDICINE

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

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(2021) Philip R. Krause et al.   NEW ENGLAND JOURNAL OF MEDICINE

Optimizing vaccine allocation for COVID-19 vaccines shows the potential role of single-dose vaccination

(2021) Laura Matrajt et al.   Nature Communications

Effectiveness of BNT162b2 and mRNA-1273 covid-19 vaccines against symptomatic SARS-CoV-2 infection and severe covid-19 outcomes in Ontario, Canada: test negative design study

(2021) Hannah Chung et al.   BMJ-British Medical Journal

Effectiveness of the CoronaVac vaccine in older adults during a gamma variant associated epidemic of covid-19 in Brazil: test negative case-control study

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Neutralisation of SARS-CoV-2 lineage P.1 by antibodies elicited through natural SARS-CoV-2 infection or vaccination with an inactivated SARS-CoV-2 vaccine: an immunological study

(2021) William M Souza et al.   Lancet Microbe

Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK

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Theoretical Basis of the Test-Negative Study Design for Assessment of Influenza Vaccine Effectiveness

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