COVID-19: THE VACCINE: Here are the key differences between the Moderna and Pfizer vaccines

JACKSONVILLE, Fla. — Moderna could soon begin shipping out millions of its COVID-19 vaccines across the country.

The shots don’t require the same ultra-cold storage as Pfizer’s - which need to be at around minus-75 degrees Celsius - and they can be put in the refrigerator for only up to five-days before expiring.

Moderna’s vaccines can be kept at about minus-20 degrees Celsius … and in a refrigerator for 30-days before they expire.

When it comes to dosage, Moderna calls for two doses 28-days apart.

Pfizer’s shots are also administered in two doses, but 21-days apart.

Both vaccines rely on mRNA – or messenger RNA – to work and they are said to be around 95-percent effective.