If you zoom in on the vomit link, "EMS: NAUSEA/VOMITING", you'll see multiple emergency calls made to Ursinus College. You'll have to zoom in to see it. And, over time, the icons have been set to programmatically fade.

Screenshot 2016-02-17 18.43.41

So what's needed is a way to see a high number of calls, in a small region, in a short amount of time. That could point to a problem in any category.

Take a look at the crash maps too. Just like the vomit map, it might make more sense to show clustering.

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