COVID-19: Significance of antibodies.

The newly emerged severe acute respiratory syndrome-related coronavirus-2 (SARS-CoV-2) has recently caused pandemic Coronavirus Disease-2019 (COVID-19). Considering the serious medical, economic and social consequences of this pandemic and the lack of definite medication and vaccine it is necessary to describe natural immune responses to the SARS-CoV-2 in order to exploit them for treating the patients and monitoring the general population. Moreover, detecting the most immunogenic antigens of the virus is fundamental for designing effective vaccines. Antibodies being valuable for diagnostic therapeutic and protective purposes are suitable to be addressed in this context. Herein, we have summarized the findings of serological investigations and the outcomes of neutralizing antibodies administration in COVID-19 patients.