New England Journal of Medicine
Volume 382, Issue 11, March 2020, Page 1
Rubin, E. J.; Baden, L. R.; Morrissey, S.
Introduction
The rapid spread of SARS-CoV-2, a novel corona- virus that emerged in late 2019, and the resulting Covid-19 disease has been labeled a Public Health Emergency of International Concern by the World Health Organization.
Keywords
Epidemiology