The work was approved by the Institutional Review Board (IRB) at Indiana University (#1105005445). Informed consent was obtained by all subjects. Between December 31 and October 2, 2020, 109 patients hospitalized with suspicion of COVID-19 were tested and confirmed for SARS-CoV-2 viral infection status by PCR and prospectively underwent blood collection to profile cytokines. Samples for the RT–PCR SARS-CoV-2 lab test were collected via nasopharyngeal or oropharyngeal swab at different locations, representing outpatient, urgent care, emergency and inpatient facilities. Serum specimens for Bioplex screening were collected prospectively via venipuncture within Indiana University Health. De-identified clinical and demographic data were obtained from the Indiana Network for Patient Care (INPC) research database by Regenstrief Institute. Patient electronic health records were accessed for clinical data outcomes. Clinical follow-up data were collected up to October 2, 2020, for the cohort.
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