Lawrence County School District students entering 7th grade for the 2020-2021 School Year may require a Tdap booster immunization, according to the Mississippi State Department of Health. These immunizations are available at the Mississippi Health Departments. Lawrence County Health Department is open Tuesdays and Thursdays from 8 a.m.-5 p.m. Call 601-587-2561 for an appointment. On Mondays, Wednesdays and Fridays, the Walthall County Health Department will be open.