CDC bought cell phone data to track lockdowns, vaccination: docs
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Mobile Phone Surveys Transform Data Collection | Division of Global Health Protection | Global Health | CDC
Is the CDC really cold calling about my vaccination status?
CDC on Twitter: "If you or someone in your family receives a phone call from 404-809-2195, 404-806-4810, 404-806-4811, or 404-806-4812 (Caller ID CDC NATL IMMUN), you are being contacted to participate in