A smart friend on the forefront of medical technology policy explains (via email):
The robust surveillance systems are not publicly available.
One particularly interesting (restricted) system I’ve heard of is the NHPSS. It tracks real-time over-the-counter and prescription drug sales across the country. If a certain class of drugs starts selling at a disproportionately high level in a specific geographic region, triggers/alarms go off. Apparently it has been very successful at catching outbreaks very early, even rather small ones.
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