BACKGROUND Exposure to droplets produced in the coughs and sneezes of infected
individuals or contact with droplet-contaminated surfaces (fomites) have been widely …

SARS-CoV-2 infection is benign in most individuals but, in around 10% of cases, it triggers
hypoxaemic COVID-19 pneumonia, which leads to critical illness in around 3% of cases …

Studies have demonstrated that at least 20% of individuals infected with SARS-CoV-2
remain asymptomatic,,–. Although most global efforts have focused on severe illness in …

The novel virus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused
a pandemic of coronavirus disease 2019 (COVID-19). Across the globe, a subset of patients …

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 …

Background: Asymptomatic infection seems to be a notable feature of severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2), the pathogen that causes coronavirus …

Importance Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the etiology of
coronavirus disease 2019 (COVID-19), is readily transmitted person to person. Optimal …

The science around the use of masks by the public to impede COVID-19 transmission is
advancing rapidly. In this narrative review, we develop an analytical framework to examine …

Some patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
develop severe pneumonia and acute respiratory distress syndrome (ARDS). Distinct …

The pandemic of the coronavirus disease 2019 (COVID-19) has provoked a second
pandemic, the “long-haulers”, ie, individuals presenting with post-COVID symptoms. We …