[HTML][HTML] Long-term effectiveness of COVID-19 vaccines against infections, hospitalisations, and mortality in adults: findings from a rapid living systematic evidence …

N Wu, K Joyal-Desmarais, PAB Ribeiro… - The Lancet …, 2023 - thelancet.com
Background Synthesising evidence on the long-term vaccine effectiveness of COVID-19
vaccines (BNT162b2 [Pfizer–BioNTech], mRNA-1273 [Moderna], ChAdOx1 nCoV-19 …

COVID-19 vaccine effectiveness against the omicron (BA. 2) variant in England

FCM Kirsebom, N Andrews, J Stowe, S Toffa… - The Lancet Infectious …, 2022 - thelancet.com
The omicron (B. 1.1. 529) variant, first detected in the UK on Nov 27, 2021, rapidly became
the dominant strain, due in part to reduced vaccine effectiveness. 1 An increase in …

Effectiveness of a fourth dose of covid-19 mRNA vaccine against the omicron variant among long term care residents in Ontario, Canada: test negative design study

R Grewal, SA Kitchen, L Nguyen, SA Buchan… - Bmj, 2022 - bmj.com
Objectives To estimate the marginal effectiveness of a fourth versus third dose and the
vaccine effectiveness of mRNA covid-19 vaccines BNT162b2 and mRNA-1273 against any …

[HTML][HTML] Effectiveness of mRNA-1273 vaccination against SARS-CoV-2 omicron subvariants BA. 1, BA. 2, BA. 2.12. 1, BA. 4, and BA. 5

HF Tseng, BK Ackerson, KJ Bruxvoort, LS Sy… - Nature …, 2023 - nature.com
Studies have reported reduced natural SARS-CoV-2 infection-and vaccine-induced
neutralization against omicron BA. 4/BA. 5 compared with earlier omicron subvariants. This …

[HTML][HTML] Outcomes of elderly patients hospitalized with the SARS-CoV-2 omicron B. 1.1. 529 variant: A systematic review

RM Fericean, C Oancea, AR Reddyreddy… - International Journal of …, 2023 - mdpi.com
The Omicron (B. 1.1. 529) variant of the severe acute respiratory syndrome Coronavirus 2
(SARS-CoV-2) had an increased rate of spreading among the general population. Although …

[HTML][HTML] The end or a New Era of development of SARS-CoV-2 virus: Genetic variants responsible for severe COVID-19 and clinical efficacy of the most commonly …

D Miteva, M Kitanova, H Batselova, S Lazova… - Vaccines, 2023 - mdpi.com
Although the chief of the World Health Organization (WHO) has declared the end of the
coronavirus disease 2019 (COVID-19) as a global health emergency, the disease is still a …

Vaccine effectiveness of primary series and booster doses against covid-19 associated hospital admissions in the United States: living test negative design study

K Adams, JP Rhoads, D Surie, M Gaglani, AA Ginde… - Bmj, 2022 - bmj.com
Objective To compare the effectiveness of a primary covid-19 vaccine series plus booster
doses with a primary series alone for the prevention of hospital admission with omicron …

[HTML][HTML] Effect of SARS-CoV-2 prior infection and mRNA vaccination on contagiousness and susceptibility to infection

D Mongin, N Bürgisser, G Laurie, G Schimmel… - Nature …, 2023 - nature.com
The immunity conferred by SARS-CoV-2 vaccines and infections reduces the transmission
of the virus. To answer how the effect of immunity is shared between a reduction of …

[HTML][HTML] mRNA-1273 bivalent (original and Omicron) COVID-19 vaccine effectiveness against COVID-19 outcomes in the United States

HF Tseng, BK Ackerson, LS Sy, JE Tubert… - Nature …, 2023 - nature.com
The bivalent (original and Omicron BA. 4/BA. 5) mRNA-1273 COVID-19 vaccine was
authorized to offer broader protection against COVID-19. We conducted a matched cohort …

[HTML][HTML] Duration of protection of ancestral-strain monovalent vaccines and effectiveness of bivalent BA. 1 boosters against COVID-19 hospitalisation in England: a test …

FCM Kirsebom, N Andrews, J Stowe… - The Lancet Infectious …, 2023 - thelancet.com
Background Bivalent BA. 1 booster vaccines were offered to adults aged 50 years or older
and clinically vulnerable people as part of the 2022 autumn COVID-19 booster vaccination …