Experts from the Harvard Medical School University College London, King’s College London and the Weizmann Institute of Science in Israel surveyed the data from three digital surveillance platforms in the U.S., U.K. and Israel. The survey included a total testing pool of over 10 million respondents, 658,325 individuals tested positive for coronavirus.
It was found that loss of smell and taste was a reliable COVID signal. In fact, these two symptoms were consistently the strongest predictor of the COVID 19 infection across all platforms over time.
Here are some other common symptoms of COVID 19 infection: