Disease maps are a compelling case for "ignorance is bliss," but if you're wondering who in your neighborhood has the flu, well, there's an app for that.
Johnson & Johnson’s Healthyday crowdsources data from doctor's offices, local Google searches, and status updates on Twitter and Facebook to map health trends, specifying symptoms as "flu," "cold," or "allergy" so users can take an educated guess as to the cause of that stuffy nose. Healthyday additionally allows users to break down the reports so they can target the exact streets where coughs and other ailments occurred.
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