The Defense Advanced Research Projects Agency (DARPA) has developed a subdermal implant to continuously test a person’s blood for infection before they present symptoms that they are sick — a development that the agency is trying to use to stop future pandemics.
Retired Colonel Matt Hepburn told CBS News’s “60 Minutes” that the device, which the network described as a “tissue-like gel,” is designed to be put “underneath your skin” and that it notifies a person that “there are chemical reactions going on inside the body and that signal means you are going to have symptoms tomorrow.”

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