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
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
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?
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