Abstract Introduction Nowadays, emerging SARS‐CoV‐2 Omicron, the novel highly mutated
VOC, has quickly spread as the dominant variant in over 190 countries worldwide through …

Objective The spread of the novel SARS-Cov-2 variant Omicron created a challenging
public health situation in a number of countries. In March 2022, Omicron emerged in …

Objectives To summarize the clinical characteristics of patients infected by SARS-CoV-2
omicron variant and explore the risk factors affecting the progression in a Fangcang hospital …

Dear Editor, SARS-CoV-2 Omicron variant BA. 1 first emerged on the Chinese mainland on
January 8, 2022, in Tianjin and caused a large wave of infections. 1 Four rounds of mass …

We read with interest the letter published recently by Costa et al. in the journal of Infection.
They analyzed the difference between the viral loads of the SARS-CoV-2 Alpha and Delta …

Protection against Omicron by Previous SARS-CoV-2 Infection Using a national Covid-19
database in Qatar, investigators found that previous SARS-CoV-2 infection provided …

The exact profiles of the clinical symptoms related to the SARS-CoV-2 Omicron variant (B.
1.1. 529) remain largely uncertain. Therefore, this study aimed to clarify the clinical …

The genetic evolution of SARS-CoV-2 began in February 2020, with G614 spike protein
strains superseding D614 strains globally. Since then with each subsequent mutations, the …

Background The increase in SARS-CoV-2 infections in December 2021 was driven primarily
by the Omicron variant, which largely displaced the Delta over a three-week span. Outcomes …

Abstract The B. 1.1. 529 (Omicron) variant of severe acute respiratory syndrome coronavirus
2 (SARS-CoV-2) has previously been reported as more transmissible, but less severe than …