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

SARS-CoV-2 infections are characterized by viral proliferation and clearance phases and
can be followed by low-level persistent viral RNA shedding. The dynamics of viral RNA …

INTRODUCTION Several novel variants of severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2), the virus that causes COVID-19, emerged in late 2020. One of these, Variant …

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 We used genomic epidemiology to investigate the introduction and spread
of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the Boston area …

The contributions of asymptomatic infections to herd immunity and community transmission
are key to the resurgence and control of COVID-19, but are difficult to estimate using current …

Background Routine asymptomatic testing using RT-PCR of people who interact with
vulnerable populations, such as medical staff in hospitals or care workers in care homes …

Although most cases of coronavirus disease 2019 (COVID-19) have occurred in low-
resource countries, little is known about the epidemiology of the disease in such contexts …

As children are under-represented in current studies aiming to analyse transmission of
SARS-coronavirus 2 (SARS-CoV-2), their contribution to transmission is unclear. Viral load …

The recent development and regulatory approval of a variety of serological assays indicating
the presence of antibodies against severe acute respiratory syndrome coronavirus 2 has led …