Virus-like particle (VLP) and live virus assays were used to investigate neutralizing immunity
against Delta and Omicron SARS-CoV-2 variants in 259 samples from 128 vaccinated …

Vaccine effectiveness is lower and wanes faster against infection and symptomatic disease
caused by the omicron variant of SARS-CoV-2 than was observed with previous variants …

The emergence of SARS-CoV-2 variants of concern with progressively increased
transmissibility between humans is a threat to global public health. The Omicron variant of …

Summary The SARS-CoV-2 Omicron variant (B. 1.1. 529) contains mutations that mediate
escape from antibody responses, although the extent to which these substitutions in spike …

Omicron Neutralization from Vaccines in China In this study, neutralization against the SARS-
CoV-2 omicron subvariants was reduced with both the inactivated and ZF2001 vaccines …

The evolvement of coronavirus variants is socially unacceptable but understandable in a
world that has grown tired of playing defence against “severe acute respiratory syndrome …

Abstract The B. 1.1. 529/Omicron variant of SARS-CoV-2 was only recently detected in
southern Africa, but its subsequent spread has been extensive, both regionally and globally …

SARS-CoV-2 variants of concern have continuously evolved and may erode vaccine
induced immunity. In this observational cohort study, we determine the risk of breakthrough …

Discussion There have been over 8.2 billion doses of SARS-CoV-2 vaccines administrated
in more than 4.3 billion persons around the world [Citation 1]. However, the emerging of the …

Evidence on the effectiveness of COVID-19 vaccines among people who recovered from a
previous SARS-CoV-2 infection is warranted to inform vaccination recommendations. Using …