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3 Doz mRNA COVID-19 Aşısı ve SARS-CoV-2 Omicron Varyantı Enfeksiyonu Arasındaki İlişki.
Publication Type: Academic Journal
Source(s): Archives Medical Review Journal / Arsiv Kaynak Tarama Dergisi. 2022, Vol. 31 Issue 4, p249-253. 5p.
Abstract: Aralık 2021'de SARS-CoV-2 Omicron varyantı, COVID-19 pandemisinde küresel olarak baskın hale gelerek Delta varyantını hızla geride bıraktı. Omicron varyantı, mutasyonları nedeniyle aşıların koruyuculuğunu azaltma konusunda ciddi endişeler uyandırmıştır...
Nationwide Effectiveness of First and Second SARS-CoV2 Booster Vaccines During the Delta and Omicron Pandemic Waves in Hungary (HUN-VE 2 Study).
Publication Type: Academic Journal
Source(s): Frontiers in immunology [Front Immunol] 2022 Jun 23; Vol. 13, pp. 905585. Date of Electronic Publication: 2022 Jun 23 (Print Publication: 2022).
Abstract: Background: In Hungary, the pandemic waves in late 2021 and early 2022 were dominated by the Delta and Omicron SARS-CoV-2 variants, respectively. Booster vaccines were offered with one or two doses for the vulnerable population during these periods.Met...
Protection against Omicron BA.1/BA.2 severe disease 0–7 months after BNT162b2 booster.
Publication Type: Academic Journal
Source(s): Communications Biology. 3/23/2023, Vol. 6 Issue 1, p1-7. 7p.
Abstract: Following evidence of waning immunity against both infection and severe disease after 2 doses of the BNT162b2 vaccine, Israel began administering a 3rd BNT162b2 dose (booster) in July 2021. Recent studies showed that the 3rd dose provides a much lower ...
BNT162b2 Effectiveness Against Delta and Omicron Variants of Severe Acute Respiratory Syndrome Coronavirus 2 in Adolescents Aged 12–17 Years, by Dosing Interval and Duration.
Publication Type: Academic Journal
Source(s): Journal of Infectious Diseases. May2023, Vol. 227 Issue 9, p1073-10783. 9711p.
Abstract: Background Two- and 3-dose BNT162b2 vaccine effectiveness (VE) against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, including Delta and Omicron variants, was assessed among adolescents in Canada, where first and second doses ...
Immunogenicity of a fractional or full third dose of AZD1222 vaccine or BNT162b2 messenger RNA vaccine after two doses of CoronaVac vaccines against the Delta and Omicron variants.
Publication Type: Academic Journal
Source(s): International Journal of Infectious Diseases. Apr2023, Vol. 129, p19-31. 13p.
Abstract: • No safety concern of the third dose boosting with either vaccine. • Half-dose immunogenicity of either vaccine was noninferior to the full dose. • Both doses elicited high immunogenicity and were best with longer boost intervals. • The immunogenicity...
Saliva and Plasma Neutralizing Activity Induced by the Administration of a Third bnt162b2 Vaccine Dose.
Publication Type: Academic Journal
Source(s): International Journal of Molecular Sciences. Nov2022, Vol. 23 Issue 22, p14341. 16p.
Abstract: The BNT162b2 vaccine induces neutralizing activity (NA) in serum, but no data are available on whether a third-dose activates specific-immunity within the oral mucosa, representing the primary route of viral-entry. To carefully address this issue, we i...
Vaccine effectiveness and duration of protection of COVID-19 mRNA vaccines against Delta and Omicron BA.1 symptomatic and severe COVID-19 outcomes in adults aged 50 years and over in France.
Publication Type: Academic Journal
Source(s): Vaccine. Mar2023, Vol. 41 Issue 13, p2280-2288. 9p.
Abstract: • The Original mRNA vaccines used in France provide high levels of protection against both symptomatic SARS-CoV-2 infection and severe COVID-19 outcomes in immunocompetent adults aged 50 years and over, following 2-doses complete primary vaccination. •...
Reduced Neutralization Efficacy against Omicron Variant after Third Boost of BNT162b2 Vaccine among Liver Transplant Recipients.
Publication Type: Academic Journal
Source(s): Viruses (1999-4915). Jan2023, Vol. 15 Issue 1, p253. 13p.
Abstract: The immune responses of liver transplant (LT) recipients after the third boost of the BNT162b2mRNA vaccine improved. This study evaluates the durability of the immune response of LT recipients after the third boost, its predictors, and the impact of em...
Comparative complete scheme and booster effectiveness of COVID‐19 vaccines in preventing SARS‐CoV‐2 infections with SARS‐CoV‐2 Omicron (BA.1) and Delta (B.1.617.2) variants: A case–case study based on electronic health records
Publication Type: Academic Journal
Source(s): Influenza & Other Respiratory Viruses. Mar2023, Vol. 17 Issue 3, p1-10. 10p.
Abstract: Background: Information on vaccine effectiveness in a context of novel variants of concern (VOC) emergence is of key importance to inform public health policies. This study aimed to estimate a measure of comparative vaccine effectiveness between Omicro...
Effect of Previous COVID-19 Vaccination on Humoral Immunity 3 Months after SARS-CoV-2 Omicron Infection and Booster Effect of a Fourth COVID-19 Vaccination 2 Months after SARS-CoV-2 Omicron Infection.
Publication Type: Academic Journal
Source(s): Viruses (1999-4915). Nov2022, Vol. 14 Issue 11, p2458. 12p.
Abstract: In this study, we aimed to determine the effect of COVID-19 vaccination on 3-month immune response and durability after natural infection by the Omicron variant and to assess the immune response to a fourth dose of COVID-19 vaccination in patients with...