The highly transmissible Omicron (B. 1.1. 529) variant of severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) was first detected in late 2021. Initial Omicron waves were …

The severe acute respiratory syndrome coronavirus (SARS-CoV)-2 responsible for the
global COVID-19 pandemic has caused almost 760 million confirmed cases and 7 million …

Importance With the ongoing COVID-19 pandemic, it is crucial to assess the current burden
of disease of community-acquired SARS-CoV-2 Omicron variant in hospitalized patients to …

Abstract Background The SARS-CoV-2 Omicron BA. 2 subvariant replaced BA. 1 globally in
early 2022, and caused an unprecedented tsunami of cases in Hong Kong, resulting in the …

Background: The SARS-CoV-2 variants of concern exhibit distinct features in terms of
transmissibility and virulence. This study compared the clinical characteristics of COVID-19 …

Importance Literature on vaccine effectiveness of SARS-CoV-2 messenger RNA (mRNA)
vaccines for children younger than 5 years is limited. Objective To report the effectiveness of …

The spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the
implementation of restrictive measures led to a dramatic reduction in respiratory syncytial …

Children infected by SARS-CoV-2 Omicron variant may develop neurological complications.
To study the pathogenesis in the growing brain, we intranasally challenged newly-weaned …

Vaccine effectiveness of BNT162b2 and CoronaVac against COVID-19-associated
hospitalization and moderate-to-severe disease due to SARS-CoV-2 Omicron BA. 2 is …

Abstract Objectives Since April 2022, another wave of the Omicron epidemic has struck
Taiwanese society, and children with severe neurological complications have been reported …