More walk-in first and second doses available at Redmond mass vaccination clinic REDMOND, Ore. (KTVZ) -- The Mass Vaccination Clinic at the Deschutes Fair & Expo Center will continue to offer walk-in COVID-19 vaccine appointments this week. “It was great to see so many people come out last weekend for our first walk-in hours and we’re excited to offer more walk-in times this week,” said Molly Wells-Darling, incident commander. “Walk-in appointments are an easy and convenient way to get your vaccine.” First dose appointments First-dose walk-in appointments are available on Wednesday from 9 a.m. to noon and on Friday from 1 to 4 p.m.