Passport Health posted The Development and Lifespan of a Vaccine Passport Health Fredericksburg, VA:

The Development and Lifespan of a Vaccine

Before a vaccine is ready to protect the public from viruses and diseases, there's a long process of development. From the early research to trials, safety testing and introduction to the public, years of hard and focuses work are required. So, what goes into the development and lifespan of a vaccine?

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