SEVIERVILLE â The Sevier County Health Department is currently offering only the Pfizer vaccine for COVID-19, which has led to some confusion for people who had appointments to return there for their second dose of the Moderna vaccine. Local officials indicated Thursday the county health department has been receiving only the Pfizer vaccine, although other providers in the county have the Moderna vaccine. âAppointments can be made several weeks in advance and it is likely these appointments in question were made in advance of (when) Sevier Countyâs vaccine allotment changed from Moderna to Pfizer,â said Corie Gouge, spokeswoman for the East Tennessee region of the state health department.