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Symptoms ID’d That Should Trigger COVID-19 Testing

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Key Takeaways

  • A grouping of 7 symptoms has the highest sensitivity for identifying COVID-19 cases.
  • The researchers found that the COVID-19-specific symptom grouping (cough, dyspnea, fever, and anosmia/ageusia) identified 69% of cases within 3 days of symptom onset.
  • Fatigue, anosmia/ageusia, fever, cough, diarrhea, headache, and sore throat comprised the grouping with the highest sensitivity, which identified 96% of cases.

HealthDay News–A grouping of 7 symptoms has the highest sensitivity for identifying COVID-19 cases, according to a study published in the Journal of Infection.

Michela Antonelli, Ph.D., from the School of Biomedical Engineering & Imaging Sciences at King’s College London, and colleagues included data for U.K. and U.S. users of the COVID-19 Symptom Study app who reported new-onset symptoms and reverse transcription-polymerase chain reaction (RT-PCR) tests within 7 days of symptom onset. For different symptom combinations, the sensitivity, specificity, and number of RT-PCR tests needed to identify 1 case (tests per case [TPC]) were calculated.

Overall, 122,305 (1202 positives) and 3162 (79 positives) individuals were included in the U.K. and U.S. cohorts, respectively. The researchers found that the COVID-19-specific symptom grouping (cough, dyspnea, fever, and anosmia/ageusia) identified 69% of cases within 3 days of symptom onset, requiring 47 TPC. Fatigue, anosmia/ageusia, fever, cough, diarrhea, headache, and sore throat comprised the grouping with the highest sensitivity, which identified 96% of cases, requiring 96 TPC.

“The identification of this combination of symptoms through the COVID Symptom Study app is another prime demonstration of the value of big data analytics and mobile health technology to support the management of this pandemic,” a coauthor said in a statement.

One author disclosed financial ties to the pharmaceutical industry; several authors are employees of Zoe Global Limited, which funded the study and developed the app used in the study.

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