Is there any way to do this with a disease that can spread for a week before symptoms show when we don't have anywhere near adequate numbers of tests? The issue

Is there any way to do this with a disease that can spread for a week before symptoms show when we don't have anywhere near adequate numbers of tests? The issue here is that unlike most other diseases, this one goes from one person somewhere has it to many, many people in many places have it before it can be detected in its original location.