Global health officials have praised China and South Korea for the success of their efforts to contain the coronavirus. What are those countries getting right — and what can everyone else learn from them?Guest: Donald G. McNeil Jr., a science and health reporter for The New York Times. For more information on today’s episode, visit nytimes.com/thedaily. Background reading: While world leaders are finally speaking out about the gravity of the pandemic, their response lacks unity with the United States absent from its traditional conductor role in managing global crises. Stocks tanked again as the outbreak was officially declared a pandemic and policies to address its impact proved lacking or ineffective.All flights to the U.S. have been suspended from Europe. Many schools announced they would close indefinitely, some nursing homes banned visitors, and workplaces across the country have urged their employees to work from home. Here are the latest updates.