Table 1. Ingredients of the vaccines discussed in the text.

Astra Zeneca AZD1222	BioNTech BNT162b2	Moderna mRNA-1273
- L-Histidine - L-Histidine hydrochloride monohydrate - Magnesium chloride hexahydrate - Polysorbate 80 - Ethanol - Sucrose - Sodium chloride - Disodium edetate dihydrate - Water for injections	- ((4-hydroxybutyl)azanediyl) bis (hexane-6,1-diyl)bis(2-hexyldecanoate) (ALC-0315) - 2-[(polyethylene glycol)-2000]-N,N-ditetradecylacetamide (ALC-0159) - 1,2-Distearoyl-sn-glycero-3-phosphocholine (DSPC) - Cholesterol - Potassium chloride - Potassium dihydrogen phosphate - Sodium chloride - Disodium phosphate dihydrate - Sucrose - Water for injections	- SM-102, 1,2-dimyristoylrac-glycero-3-methoxypolyethylene glycol-2000 [PEG2000-DMG] - Cholesterol - 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC) - Tromethamine (-HCI) - Acetic acid - Sodium acetate - Sucrose