MODERNA is a Key Forerunner among all Vaccines:
At the end of March, 2020 this company started testing its mRNA-1273 vaccine against COVID-19 in Washington on 45 healthy volunteers with ages between 18-55, this mRNA vaccine when injected into human body cells, the lymphocytes (B and T cells) in lymph nodules can operate that mRNA initiates the formulation of protein in just the right way for other immune cells to mark and identify them for destruction (Grein et al., 2020).