<i>The best way to control the current outbreak is with traditional measures: diagnosing patients, isolating them, tracing their contacts and testing them, and extending the process out in circles, until all exposed patients have been isolated.</i><p>I was wondering about the software they use to track this process, if any? Say, for example, you get the manifest for a plane where a passenger was infected. If you wanted to track infections from that point, which is unlikely but possible, that's a lot of work. And if it spirals out from there?