Wednesday, March 11 was the day that America woke up to threat posed by COVID-19. For most Americans who don’t inhabit Silicon Valley Twitter and don’t obsessively follow news out of China, there was not a gradual acceptance or a slow reckoning with our new shared reality; there was one day, when Tom Hanks announced he had been infected and the NBA cancelled its season, that turned the disease from a media novelty into a visceral reality.