Thousands of invalid vaccine appointments hold up line at UT A linked shared online allowed thousands to sign up for illegitimate vaccine appointments Monday. AUSTIN, Texas - A UT spokesperson says thousands of people scheduled invalid COVID-19 vaccination appointments at the university’s Gregory Gymnasium Monday using a shared link. They were able to register using a single link because individualized links were "eased" to expedite registration following severe winter weather. The mishap caused a blocks long line, delay, and confusion for those with and without valid appointments. "There’s a lot of young people in line that don’t follow the 1B rule." noted Sharon Harrison, who waited hours for her appointment.