The Baltimore County Department of Health will hold an immunization clinic from 9 a.m. to noon tomorrow at the Woodlawn Health Center, 1811 Woodlawn Drive, for students who haven't had their required shots.

No appointment is necessary and immunizations are free. Parents must show a copy of their child's immunization record for the walk-in clinic. The 2008-2009 school year immunization requirements include chickenpox and hepatitis B vaccination for children entering preschool programs through 11th grade. Students are given up to 20 calendar days from the first day of school to get the required vaccinations.

Information: 410-887-2705.