I think detecting that something bad is happening, finding out how, and stopping it prevents other people from being affected. Otherwise contamination incidents could go on for years, and the cumulative exposure to affected individuals would be higher, and the number of individuals affected would also be higher.

Now they don’t even have the personnel to do anything about it, assuming they find it this time at all.

Nor the one before that where the CDC itself argues that lead in kids was fine. That happened in Washington D.C. btw.