What’s required, first and foremost, is massive testing — not only vastly more diagnostic testing than we’re doing now, but also what’s called “surveillance” testing, so public-health officials can determine what communities are safe and can identify outbreaks when they are still small and isolate the people who are infected. Asked about plans for “monitoring and testing,” Trump lied about the current level of testing and almost certainly made up a story about how “other countries” are now “calling us” for advice.