Updated on January 14, 2021 at 6:43 pm NBCUniversal, Inc. Dallas County Judge Clay Jenkins and Dallas Mayor Eric Johnson are quarreling over mixed messages regarding how COVID-19 vaccines are being distributed at the large-scale hub that opened earlier this week in Fair Park. In letters shared with NBC 5, Johnson said in a letter to Jenkins Wednesday that he had "serious concerns about communication and decision-making by Dallas County" after being told someone was able to walk-up and be vaccinated at the county's large-scale hub without first registering and receiving an appointment. Johnson said that he also learned Jenkins "had communicated this policy change to a select group of residents Tuesday" and that he also "requested their agreement to not share this information widely."