Everyone age 16 and older, regardless of occupation or health status, will be eligible for the COVID-19 vaccine in Texas starting March 29, state health officials said Tuesday. The Texas Department of State Health Services is still asking providers to prioritize appointments for people who are 80 and older, and to prioritize walk-ins from anyone in that age group who shows up without an appointment. The vaccines are not limited to Texas residents, and citizenship is not a requirement for the vaccine.