This piece by Dr. Ashish K. Jha, Director of the Harvard Global Health Institute, is absolutely crucial reading, especially by Washington policymakers handling the COVID-19 crisis. It puts forth the steps that must be taken immediately if we are to reopen the economy as soon as possible without a resurgence of this ghastly disease. The key is a rapid ramp-up of testing: The COVID-19 pandemic is taking an unprecedented toll on Americans and on the country’s daily life. President Trump has said he wants to open up again—we all do. The real question is how we reopen in a way...