Since the initial reports of a cluster of pneumonia cases of unidentified origin in Wuhan,
China, in December 2019, the novel coronavirus that causes this disease—severe acute …

Many nations are pursuing the rollout of SARS-CoV-2 vaccines as an exit strategy from
unprecedented COVID-19-related restrictions. However, the success of this strategy relies …

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

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spread rapidly in Manaus,
the capital of Amazonas state in northern Brazil. The attack rate there is an estimate of the …

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus is causing a
global pandemic, and cases continue to rise. Most infected individuals experience mildly …

The emergence of a novel coronavirus, severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2), and more recently, the independent evolution of multiple SARS-CoV-2 …

The COVID-19 pandemic disrupted health systems and economies throughout the world
during 2020 and was particularly devastating for the United States, which experienced the …

Scientists across disciplines, policymakers, and journalists have voiced frustration at the
unprecedented polarization and misinformation around coronavirus disease 2019 (COVID …

Introduction A precise estimate of the frequency and severity of SARS‐CoV‐2 reinfections
would be critical to optimize restriction and vaccination policies for the hundreds of millions …

Background Protection afforded from prior disease among patients with coronavirus disease
2019 (COVID-19) infection is unknown. If infection provides substantial long-lasting …