IL-10/IL-6 ratio from nasal & oral swab samples, acts as an inflammatory indicator for COVID-19 patients infected with the delta variant.

expression was higher in non-vaccinated COVID-19 patients infected with delta-variant irrespective of their viral-load compared to uninfected individuals. However, in double-vaccinated patients, only in high viral-load patients (Ct value < 25), expression increased. In high viral-load patients, irrespective to their vaccination status, expression was lower compared to the uninfected control group. Surprisingly, expression was lower in double-vaccinated patients with Ct value > 30. , and expression remained unaltered in uninfected and infected individuals. However, expression was lower in non-vaccinated patients with Ct value < 25 compared to control group. Our study unveiled that ratio can be used as a biomarker for COVID-19 patients upon proper establishment of it in a clinical setting.