But there is worse. Troubling new findings suggest that stopping the pandemic might require repeated shutdowns. And yet it is also now clear that such a strategy would condemn the world economy to the grave—perhaps intolerable—harm. Some very hard choices lie ahead.
Like the common cold, covid-19 spreads through virus-laden droplets of moisture released when an infected person coughs, sneezes or merely exhales. A team of researchers, including scientists from America’s National Institute of Allergy and Infectious Diseases, simulated how an infected individual might spread the virus in the air and on plastic, cardboard, stainless steel and copper. They then measured how long the virus remained infectious in those environments.