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10.1177/0022034520946251

http://scihub22266oqcxt.onion/10.1177/0022034520946251
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32744907!7399563!32744907
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suck abstract from ncbi


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pmid32744907      J+Dent+Res 2020 ; 99 (11): 1239-1244
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  • Viral Load Dynamics in Sputum and Nasopharyngeal Swab in Patients with COVID-19 #MMPMID32744907
  • Liu R; Yi S; Zhang J; Lv Z; Zhu C; Zhang Y
  • J Dent Res 2020[Oct]; 99 (11): 1239-1244 PMID32744907show ga
  • Coronavirus disease 2019 (COVID-19) has caused a global pandemic associated with substantial morbidity and mortality. Nasopharyngeal swabs and sputum samples are generally collected for serial viral load screening of respiratory contagions, but temporal profiles of these samples are not completely clear in patients with COVID-19. We performed an observational cohort study at Renmin Hospital of Wuhan University, which involved 31 patients with confirmed COVID-19 with or without underlying diseases. We obtained samples from each patient, and serial viral load was measured by real-time quantitative polymerase chain reaction. We found that the viral load in the sputum was inclined to be higher than samples obtained from the nasopharyngeal swab at disease presentation. Moreover, the viral load in the sputum decreased more slowly over time than in the nasopharyngeal group as the disease progressed. Interestingly, even when samples in the nasopharyngeal swab turned negative, it was commonly observed that patients with underlying diseases, especially hypertension and diabetes, remained positive for COVID-19 and required a longer period for the sputum samples to turn negative. These combined findings emphasize the importance of tracking sputum samples even in patients with negative tests from nasopharyngeal swabs, especially for those with underlying conditions. In conclusion, this work reinforces the importance of sputum samples for SARS-CoV-2 detection to minimize transmission of COVID-19 within the community.
  • |*Viral Load[MESH]
  • |Adult[MESH]
  • |Betacoronavirus/*isolation & purification[MESH]
  • |COVID-19[MESH]
  • |China[MESH]
  • |Coronavirus Infections/*diagnosis[MESH]
  • |Humans[MESH]
  • |Nasopharynx/*virology[MESH]
  • |Pandemics[MESH]
  • |Pneumonia, Viral/*diagnosis[MESH]
  • |Retrospective Studies[MESH]
  • |SARS-CoV-2[MESH]


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