Our results confirm the role of primary and booster COVID-19 vaccination in preventing COVID-19 severe events in patients with cancer and highlight the need for the additional dose in this population. Observational studies are needed to understand the effectiveness of COVID-19 vaccines in groups...
6,7. Real-world studies have since found reduced effectiveness of COVID-19 vaccines against infection or mild disease with the Omicron variant8,9,10. Receipt of a 3rd dose improves protection; however, this appears to wane rapidly from the second month after vaccination8. Evidence on protection...
Vaccine effectiveness of COVID-19 vaccines against B.1.351 (Beta) and P.1 (Gamma) variants Four RCTs [20,22,40,41] and 6 case-control studies [60,65,66,67,77,82] had evaluated the VE of COVID-19 vaccines against the Beta variant. Four RCTs [34,35,39,40], 1 cohort study [5...
This case-control study estimates the effectiveness of COVID-19 vaccines against symptomatic infections due to the Delta and Omicron variants and severe
Effectiveness of COVID-19 vaccines against infection in Japan: A test-negative study from the VENUS study 2023 Elsevier LtdBackground: Although the effectiveness of coronavirus disease 2019 (COVID-19) vaccines is a crucial public health concern, evidence from W... Y Tamada,K Takeuchi,Kusama T...
Duration of mRNA vaccine protection against SARS-CoV-2 Omicron BA.1 and BA.2 subvariants in Qatar Article Open access 02 June 2022 Effectiveness of COVID-19 vaccines against symptomatic SARS-CoV-2 infection and severe outcomes with variants of concern in Ontario Article 07 February 2022 Dat...
Vaccines may substantially reduce these risks, but evidence is needed on COVID-19 vaccine effectiveness for incarcerated people, who are confined in large, risky congregate settings. METHODS. We conducted a retrospective cohort study to estimate effectiveness of messenger RNA (mRNA) vaccines, BNT162...
This study uses data from 3 prospective cohort studies conducted in the US to assess vaccine effectiveness of bivalent COVID-19 vaccines against
The SARS-CoV-2 Omicron variant has demonstrated enhanced transmissibility and escape of vaccine-derived immunity. Although first-generation vaccines remain effective against severe disease and death, robust evidence on vaccine effectiveness (VE) against
Figure2presents the aggregated data on vaccine effectiveness in preventing severe COVID-19 for different vaccines, variants and time since vaccination. These are key parameters of interest, as they have each been shown to independently influence neutralising antibody levels4,16,29, and hence may each...