Differences in sequelae symptoms, cardiovascular biomarkers (VCAM-1, ICAM-1, and ACE2), Severe Acute Respiratory Syndrome Coronavirus 2 neutralization antibodies (SARS-CoV-2 nAb) and cytokines (IFN-γ, IL-6, and IL-17) were analyzed between the two groups. The gene discussed is IL6; the disease is severe acute respiratory syndrome.