“…19,23,24 The recently developed mRNA-based, such as BNT162b2 (Pfizer-BioNTech, or INN-tozinameran, Comirnaty) and mRNA-1273 (Moderna, or INN-elasomeran, Spikevax), and inactivated whole-virus vaccines, such as CoronaVac (Sinovac, or PiCoVacc) and BBIBP-CorV (Sinopharm, or NVSI-06-07), have been evaluated and used in children and adolescents worldwide (Figure 1). [25][26][27][28][29][30][31][32][33] The mRNA vaccine is a novel platform, whereby the RNA transcript of the spike (S) gene of the SARS-CoV-2 is injected into the recipient, which is translated by the host into the S protein antigen to trigger an immune response. 34 On the other hand, inactivated vaccines are based on the more conventional method of introducing an inactivated form of the whole virion, which includes all the structural proteins, such as S, nucleocapsid (N) and membrane (M) proteins, and usually an adjuvant as well, into the host to stimulate the immune system.…”