Impact of SARS-CoV-2 RNA titer on the level of IgG antibodies in recovered patients with COVID-19 disease.

Introduction: It is important to better understand the presence of neutralizing anti-SARS-CoV-2 antibodies in the population, as they potentially prevent (re)infection.

Aim: To correlate the Cycle threshold (Ct value) of SARS-CoV-2 and its impact on specific Anti-SARS-CoV-2 IgG titer, to reveal the effect of age and disease severity on antibodies titer.

Methodology: A total of 153 infected participants laboratory-confirmed COVID-19 cases 4-11 months ago, aged 18-85 years old (mean = 43.