The world continues to contend with successive waves of coronavirus disease 2019 (COVID-
19), fueled by the emergence of viral variants. At the same time, persistent, prolonged and …

Abstract Coronavirus disease 2019 (COVID-19) is a clinical syndrome caused by infection
with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Patients with severe …

Summary Background The SARS-CoV-2 delta (B. 1.617. 2) variant is highly transmissible
and spreading globally, including in populations with high vaccination rates. We aimed to …

Abstract The SARS-CoV-2 Delta variant has spread rapidly worldwide. To provide data on
its virological profile, we here report the first local transmission of Delta in mainland China …

Since its emergence in 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-
2) has caused hundreds of millions of cases and continues to circulate globally. To establish …

Infectious viral load (VL) expelled as droplets and aerosols by infected individuals partly
determines transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) …

INTRODUCTION Although post facto studies have revealed the importance of severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission from presymptomatic …

COVID-19, which is caused by SARS-CoV-2, can result in acute respiratory distress
syndrome and multiple organ failure–, but little is known about its pathophysiology. Here we …

The accurate and timely diagnosis of disease is a prerequisite for efficient therapeutic
intervention and epidemiological surveillance. Diagnostics based on the detection of nucleic …

The adaptive immune system is important for control of most viral infections. The three
fundamental components of the adaptive immune system are B cells (the source of …