Vaccines remain the best hope of curtailing SARS-CoV-2 transmission, morbidity, and mortality. Currently available vaccines require cold storage and sophisticated manufacturing capacity, complicating their distribution, especially in less developed countries. We report a protein-based SARS-CoV-2 vaccine that directly and specifically targets antigen-presenting cells. It consists of the SARS-CoV-2 Spike receptor-binding domain (SpikeRBD) fused to a… Continue reading A class II MHC-targeted vaccine elicits immunity against #SARS-CoV-2 and its variants
Tag: Vaccines
The spike protein of #SARS-CoV-2 variant A.30 is heavily #mutated and evades vaccine-induced antibodies with high efficiency
The COVID-19 pandemic, caused by SARS-CoV-2, continues to rage in many countries, straining health systems and economies. Vaccines protect against severe disease and death and are considered central to ending the pandemic. COVID-19 vaccines (and SARS-CoV-2 infection) elicit antibodies that are directed against the viral spike (S) protein and neutralize the virus. However, the emergence… Continue reading The spike protein of #SARS-CoV-2 variant A.30 is heavily #mutated and evades vaccine-induced antibodies with high efficiency
Comprehensive investigations revealed consistent pathophysiological alterations after #vaccination with #COVID-19 vaccines
Large-scale COVID-19 vaccinations are currently underway in many countries in response to the COVID-19 pandemic. Here, we report, besides generation of neutralizing antibodies, consistent alterations in hemoglobin A1c, serum sodium and potassium levels, coagulation profiles, and renal functions in healthy volunteers after vaccination with an inactivated SARS-CoV-2 vaccine. Similar changes had also been reported in… Continue reading Comprehensive investigations revealed consistent pathophysiological alterations after #vaccination with #COVID-19 vaccines
Waning Immunity after the BNT162b2 #Vaccine in Israel
In December 2020, Israel began a mass vaccination campaign against coronavirus disease 2019 (Covid-19) by administering the BNT162b2 vaccine, which led to a sharp curtailing of the outbreak. After a period with almost no cases of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, a resurgent Covid-19 outbreak began in mid-June 2021. Possible reasons for… Continue reading Waning Immunity after the BNT162b2 #Vaccine in Israel
#Shedding of Infectious #SARS-CoV-2Despite Vaccination
The SARS-CoV-2 Delta variant might cause high viral loads, is highly transmissible, and containsmutations that confer partial immune escape 1,2. Outbreak investigations suggest that vaccinatedpersons can spread Delta 3,4. We compared RT-PCR cycle threshold (Ct) data from 699 swabspecimens collected in Wisconsin 29 June through 31 July 2021 and tested with a qualitative assay bya… Continue reading #Shedding of Infectious #SARS-CoV-2Despite Vaccination
Effectiveness of #mRNA BNT162b2 COVID-19 vaccine up to 6 months in a large integrated health system in the USA: a retrospective cohort study
Vaccine effectiveness studies have not differentiated the effect of the delta (B.1.617.2) variant and potential waning immunity in observed reductions in effectiveness against SARS-CoV-2 infections. We aimed to evaluate overall and variant-specific effectiveness of BNT162b2 (tozinameran, Pfizer–BioNTech) against SARS-CoV-2 infections and COVID-19-related hospital admissions by time since vaccination among members of a large US health-care… Continue reading Effectiveness of #mRNA BNT162b2 COVID-19 vaccine up to 6 months in a large integrated health system in the USA: a retrospective cohort study
Assessment of #Allergic and #Anaphylactic Reactions to mRNA #COVID-19 Vaccines With Confirmatory Testing in a US Regional Health System
Objective To characterize the immunologic mechanisms underlying allergic reactions to these vaccines. Design, Setting, and Participants This case series included 22 patients with suspected allergic reactions to mRNA COVID-19 vaccines between December 18, 2020, and January 27, 2021, at a large regional health care network. Participants were individuals who received at least 1 of the… Continue reading Assessment of #Allergic and #Anaphylactic Reactions to mRNA #COVID-19 Vaccines With Confirmatory Testing in a US Regional Health System
Adenoviral Vector DNA- and #SARS-CoV-2 mRNA-Based Covid-19 Vaccines: Possible Integration into the Human #Genome – Are Adenoviral Genes Expressed in Vector-based Vaccines?
This brief review was presented here to facilitate an independent and more balanced discussion on the potential risks due to the presence of adenovirus vector DNA (AstraZeneca, Johnson & Johnson, Sputnik V and others) or SARS-CoV-2 RNA (BioNTech/Pfizer, Moderna) in vaccines that are supposed to protect against Covid-19. Of course, injections of vector-based vaccines into… Continue reading Adenoviral Vector DNA- and #SARS-CoV-2 mRNA-Based Covid-19 Vaccines: Possible Integration into the Human #Genome – Are Adenoviral Genes Expressed in Vector-based Vaccines?
Considerations in boosting #COVID-19 #vaccine immune responses
A new wave of COVID-19 cases caused by the highly transmissible delta variant is exacerbating the worldwide public health crisis, and has led to consideration of the potential need for, and optimal timing of, booster doses for vaccinated populations.1 Although the idea of further reducing the number of COVID-19 cases by enhancing immunity in vaccinated… Continue reading Considerations in boosting #COVID-19 #vaccine immune responses
2 Medical News 