Along with the race of finding therapeutic treatment, nAbs and vaccine development are also important to control the spread in the long run. SARS-CoV-2 entries the host via the binding of its spike S protein to the ACE2 receptor - sharing receptor, but with higher affinity than SARS-CoV S [76], suggesting a basis for the greater human-to-human transmission of SARS-CoV-2 [51,77].