Covid-19

Severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) emerged 3 years ago and has caused an epic global pandemic of acute respiratory disease, named “coronavirus disease 2019 (COVID-19).” This has resulted in almost 6.6 million deaths, a total of 635 million cases globally, and an ever increasing number of patients suffering from post-COVID conditions. Since the start of the pandemic, there have been continued multiple waves of viral variants causing infection and disease, disease and currently the virus may be transitioning into an endemic state. There has been an unprecedented speed and degree of discovery in learning how the virus evolves, becomes transmitted, and causes disease. Equally, there have been major advances in the detection, treatment, and preventative measures in efforts to contain the virus and limit human disease. In this issue of Seminars in Respiratory and Critical Care Medicine on “COVID-19,” we have invited a group of dedicated authors from around the globe to provide cutting edge and insightful reviews on important aspects of COVID-19, many of whom have had first-hand experience and contribution in their respective responses to the viral infection crisis.