Pfizer Testing Vaccine In 4 States

Pfizer is launching a pilot program in four states to test the distribution of its COVID-19 vaccine, chosen for their diverse characteristics. A major challenge is maintaining the vaccine at minus 94 degrees Fahrenheit during storage and shipping. Pfizer's vaccine has shown over 90% effectiveness, while Moderna's vaccine has reported over 94% effectiveness.

What are the four states where Pfizer will begin its pilot program?

Why did Pfizer choose those specific states for the pilot program?

What is one of the challenges Pfizer is facing regarding the vaccine?

At what temperature must the vaccine be kept?

What effectiveness percentages were reported by Pfizer and Moderna for their vaccines?