Concept for booster vaccination with three syringes with the third representing the boost for the Covid19 vaccine

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• vial
• injection
• vaccine
• syringe
• pharmaceutical
• sterilization
• covid
• pandemic
• medical science
• medic
• laboratory
• virus
• medical research
• medicine
• healthcare
• drugs
• immune
• science
• healthcare professionals
• glass
• bottle
• research
• droplets
• transparent
• macro
• 19+