Links for 2020-07-26

  • Sputum testing provides higher rate of COVID-19 detection | EurekAlert! Science News

    Li and his colleagues scoured the literature — both preprints and published papers — for studies that assessed at least two respiratory sampling sites using an NP swab, oropharyngeal swab or sputum. From more than 1,000 studies, they identified 11 that met their criteria. These studies included results from a total of 3,442 respiratory tract specimens. The team examined how often each collection method produced a positive result. For NP swabs, the rate was 54 percent; for oropharyngeal swabs, 43 percent; for sputum, 71 percent. The rate of viral detection was significantly higher in sputum than either oropharyngeal swabs or NP swabs. Detection rates were highest within one week of symptom onset for all three tests.

    (tags: sputum covid-19 testing swabs)

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