摘要
The coronavirus disease 2019(COVID-19)pandemic is the most devastating threat to global health since the 1918 influenza pandemic.As of May 22,2020,there have been 5.1 million cases confirmed,with over 333,000 deaths.And we are just at the beginning of a long struggle.There is a connection between COVID-19—the greatest infectious disease outbreak in a century—and the greatest chronic disease threat in the world today—tobacco smoking.Smoking has been identified by the World Health Organization(WHO)as the“single greatest preventable cause of death in the world”(1).Tobacco smoking kills 7.1 million people a year(2),with an additional 1.2 million dying from secondhand smoke(2).
