Washington County Expo Center and Fairgrounds to serve as vaccination location, 500+ already served and last updated 2021-01-20 19:55:20-05 BRENHAM, TX â In an effort to help distribute the COVID-19 vaccine faster in rural areas, Washington County Expo Center and Fairgrounds vaccinated over 500 individuals Tuesday, serving as a rural vaccination subHUB. A SubHUB, is a medical pop-up, intended to help distribute the COVID-19 vaccine faster in rural areas; these locations, come advised under Governor Greg Abbott's most recent State strategy to tackle the novel virus. âWhat you see behind me is that in action. You see 26 different agencies, Baylor Scott & White, Washington County EMS, tagged team together, to pull off a small, but busy, rural county vaccination clinic for about 2000 people,â Kevin Deramus, Washington County EMS Director.