Across the United States, governors are weighing the difficult question of when, and how, to begin to lift lockdown restrictions. Without federal coordination, some are looking abroad to see what has worked in countries like New Zealand, Australia and South Korea, which have effectively controlled the spread of the virus. The answer? Widespread testing. Guest: Katie Thomas, a business reporter covering the health care industry for The Times. For more information on today’s episode, visit nytimes.com/thedaily.