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https://www.baltimoresun.com/coronavirus/bs-hs-hopkins-invents-covid-sensor-20220329-v2dimjouxfeuvif7ujqwbm5fni-story.html
Hopkins researchers say they’ve developed a better way to test for COVID, other viruses
Johns Hopkins University researchers say they have developed a simple sensor that could quickly and accurately detect the virus that causes COVID-19 in saliva.