Increased Serum Inflammatory Markers have worsened Clinical Outcomes and Mortality in Sars-Cov-2 Infection Irrespective of High or Low Serum Viral Load

Abstract

Aim: To determine the viral load in the patients admitted in Covid-19 isolation and its correlation with the inflammatory markers and the following clinical outcome. Methodology: A retrospective study was conducted in the Pathology Department of Doctors Hospital and Medical Centre in Lahore, Pakistan from November 2020 to January 2021. IRB approval was granted. A total of 86 patients met the inclusion criteria for the study. Data was analyzed using research tool SPSS 24. Results: Increased serum viral load in SARS-CoV-2 infection showed positive correlation with inflammatory markers IL-6 (P =0.04) and D-dimer (P =0.029). Inflammatory markers LDH, Ferritin, Procalcitonin, D-Dimers and viral load itself (CT) all correlated with higher mortality while IL-6 did not. Conclusion: Serum viral load in patients infected with SARS-CoV-2 correlates with higher mortality rates itself and also raises certain inflammatory markers (IL-6, D-Dimers), which are independently accountable for causing higher mortality as well. Hence, increased inflammatory markers resulted in poor prognosis regardless of high or low viral load. Their correlation with mortality can still serve as prognostic indicators. Keywords: viral load, inflammatory markers, Covid-19, mortality