One of the main reasons for the hold-ups in the mass vaccination campaigns against COVID-19 are the precautions that must be taken regarding the handling of the vaccines and their administration. They have to be transported under very specific conditions and the syringes used for their administration must be prepared at the same vaccination site. Healthcare workers must ensure they avoid any sudden movements of the vaccines so as not to affect the vector they use, messenger RNA molecules in the case of the Pfizer BioNTech and Moderna vaccines.