Retrospective Screening for SARS-CoV-2 RNA in California, USA, Late 2019
Catherine A. Hogan, Natasha Garamani, Malaya K. Sahoo, ChunHong Huang, James L. Zehnder, Benjamin A. Pinsky
Abstract
To investigate the possibility of earlier cases of severe acute respiratory syndrome coronavirus 2 infection than previously recognized, we retrospectively tested pooled samples from 1,700 persons with respiratory signs/symptoms seen at Stanford Health Care, Palo Alto, California, USA, during the last 2 months of 2019. We found no evidence of earlier infection.
Topics & Concepts
MedicineRetrospective cohort studySevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)Coronavirus disease 2019 (COVID-19)Respiratory systemCoronavirusVirologyPediatricsInternal medicineDiseaseInfectious disease (medical specialty)SARS-CoV-2 and COVID-19 ResearchCOVID-19 Clinical Research StudiesSARS-CoV-2 detection and testing