HELENA, Mont. â Pfizer, Moderna, Johnson and Johnson -- the state of Montana is receiving more and more of all three FDA-approved vaccines. However, the question becomes, how does the state decide where to send these vaccines? Which cities get J&J? Which get Pfizer? Which get Moderna? It all comes down to population. The larger populated cities and counties get more of the Pfizer vaccine, because they have the freezer capacities for the shots. The Pfizer shots are ordered in sizes of 1,170 doses, which means they are sent to the higher populated counties and cities, and can get distributed a lot quicker into arms. The Moderna shot is only ordered in sizes of 100, which means that shot goes to more rural, and harder to reach areas of Montana. The Moderna shot also has the cold temperature special storage requirement, which helps with rural distribution, something the state has kept a close eye on.