Wrist-worn health trackers could spot Covid-19 before symptoms appear

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Health trackers worn on the wrist could pick up Covid-19 days before symptoms even appear, research suggests. The trackers monitor changes in skin temperature, heart and breathing rates and could be combined with artificial intelligence (AI) to offer a diagnosis, according to a new study. A team writing in the journal BMJ Open tested the AVA bracelet, a fertility tracker that people can buy online to track the best time to conceive. It monitors breathing rate, heart rate, heart rate variability, wrist skin temperature and blood flow. In the study, 1,163 people under the age of 51 in Lichtenste…

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