The U.S. CDC National Wastewater Surveillance System publishes pathogen trends from sewage, which health departments read next to emergency and lab data. Some jurisdictions add a statistical nowcast on top of that feed. This card is about the desk workflow, not a claim that a named model forecasts incidence with a stated error. Wastewater is a population signal. It does not diagnose a person.
This is an illustrative composite, not a trial report. A registry ranks patients who are overdue for a fit test, mammogram, or other screening the health system already recommends. Navigators call down the list. Before anyone trusts the rank order, the team checks whether the score under-calls a language group, a neighborhood, or a payer. No detection-rate improvement is claimed. A biased rank can widen a gap the program meant to close.