mRNA vaccine

mRNA versus adenovirus vaccine

What is the difference between the mRNA vaccine and the adenovirus vaccine? Can the mRNA vaccine be tweaked when new variants develop?

Multiple bottles containing mRNA vaccines

Skyrocketing demand coupled with shortages of vital components is leading to bottlenecks in the supply chain of Pfizer's and other mRNA vaccines.

Unmarked bottles of vaccines and a syringe

The best approach for protecting everyone’s health will require us to provide different vaccines to different people according to need and availability.