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The heatmap below is a representation of the volume of tweets related to Acute Respiratory Illness with sensor-based geolocation data available

_loading_ tweets are mapped (_loading_% of all 368551 tweets collected about Acute Respiratory Illness from 2018-08-08 04:00:05 UTC to just a few moments ago.) Why are the remaining tweets not mapped? These have not been geolocated and are not able to be mapped at this time. (More information is available in the FAQ)

The _loading_ tweets that are mapped are spread across _loading_ unique latitude/longitude pairs which have been rounded to four decimal points which is precise to 11.132 meters where it is least precise.

How to select an area to analyze: Looped animation of using the selector tool

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