Tag: SARSCoV2
Protection against the Omicron Variant from Previous SARS-CoV-2 Infection
To the Editor: Natural infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) elicits strong protection against reinfection with the B.1.1.7 (alpha),1,2 B.1.351 (beta),1 and B.1.617.2 (delta)3 variants. However, the B.1.1.529 (omicron) variant harbors multiple mutations that can mediate immune evasion. We estimated the effectiveness of previous infection in preventing symptomatic new cases caused by
Challenges in Inferring Intrinsic Severity of the SARS-CoV-2 Omicron Variant
Active genomic surveillance and transparent communication by South African scientists and public health practitioners recently heralded a new, rapidly circulating SARS-CoV-2 variant, now called omicron.1 Scientists and the public have been closely monitoring the clinical effects of the omicron-variant wave that has rapidly swept through the population in order to estimate the variant’s relative transmissibility,
Severity of SARS-CoV-2 Reinfections as Compared with Primary Infections
To the Editor: Qatar had a first wave of infections with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from March through June 2020, after which approximately 40% of the population had detectable antibodies against SARS-CoV-2. The country subsequently had two back-to-back waves from January through May 2021, triggered by the introduction of the B.1.1.7 (or
A Possible Role for Anti-idiotype Antibodies in SARS-CoV-2 Infection and Vaccination
The Clinical Implications of Basic Research series has focused on highlighting laboratory research that could lead to advances in clinical therapeutics. However, the path between the laboratory and the bedside runs both ways: clinical observations often pose new questions for laboratory investigations that then lead back to the clinic. One of a series of occasional
Early Treatment for Covid-19 with SARS-CoV-2 Neutralizing Antibody Sotrovimab
Trial Objectives and Oversight In this phase 3, multicenter, randomized, double-blind, placebo-controlled trial, we evaluated a single intravenous infusion of sotrovimab at a dose of 500 mg for the prevention of progression of mild-to-moderate Covid-19 in high-risk, nonhospitalized patients. For this prespecified interim analysis, patients were recruited beginning on August 27, 2020, and were followed
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