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Vaccine Breakthrough Infections with SARS-CoV-2 Variants.

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TLDR
In this paper, a cohort of 417 persons who had received the second dose of BNT162b2 (Pfizer-BioNTech) or mRNA-1273 (Moderna) vaccine at least 2 weeks previously, identified 2 women with vaccine breakthrough infection.
Abstract
Emerging variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are of clinical concern. In a cohort of 417 persons who had received the second dose of BNT162b2 (Pfizer-BioNTech) or mRNA-1273 (Moderna) vaccine at least 2 weeks previously, we identified 2 women with vaccine breakthrough infection. Despite evidence of vaccine efficacy in both women, symptoms of coronavirus disease 2019 developed, and they tested positive for SARS-CoV-2 by polymerase-chain-reaction testing. Viral sequencing revealed variants of likely clinical importance, including E484K in 1 woman and three mutations (T95I, del142-144, and D614G) in both. These observations indicate a potential risk of illness after successful vaccination and subsequent infection with variant virus, and they provide support for continued efforts to prevent and diagnose infection and to characterize variants in vaccinated persons. (Funded by the National Institutes of Health and others.).

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Journal ArticleDOI

Covid-19 Breakthrough Infections in Vaccinated Health Care Workers.

TL;DR: Despite the high efficacy of the BNT162b2 messenger RNA vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), rare breakthrough infections have been reported.
Journal ArticleDOI

Drug delivery systems for RNA therapeutics

TL;DR: A review of RNA therapeutic classes, their molecular mechanisms of action, and the design considerations for their respective delivery platforms can be found in this paper , where the authors discuss the path from preclinical drug delivery research to clinical approval of these drugs.
Journal ArticleDOI

Human genetic and immunological determinants of critical COVID-19 pneumonia

Qian Zhang, +160 more
- 28 Jan 2022 - 
TL;DR: In this article , the molecular and cellular determinants of critical COVID-19 pneumonia were reviewed and the TLR3- and TLR7-dependent production of type I interferons by respiratory epithelial cells and plasmacytoid dendritic cells, respectively, is essential for host defence against SARS-CoV-2 infection.
References
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Journal ArticleDOI

A dynamic nomenclature proposal for SARS-CoV-2 lineages to assist genomic epidemiology.

TL;DR: A rational and dynamic virus nomenclature that uses a phylogenetic framework to identify those lineages that contribute most to active spread and is designed to provide a real-time bird’s-eye view of the diversity of the hundreds of thousands of genome sequences collected worldwide.
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