Beginning with the 2009/2010 school year, one dose of quadrivalent meningococcal vaccine shall be administered at eleven (11) years of age and by twelve (12) years of age.
Previous doses of quadrivalent meningococcal vaccine may satisfy § 147.1 unless given before the appropriate age.
D.C. Mun. Regs. tit. 22, r. 22-B147