The first dose of varicella is recommended at twelve (12) months of age, but shall be administered not earlier than twelve (12) months of age and by sixteen (16) months of age. A dose of MMR, varicella, one of the single-antigen measles, mumps, rubella, or any other live parenteral vaccine shall not be administered less than twenty-eight (28) days apart, unless administered on the same day.
Beginning with the 2008/2009 school year, a second dose of varicella shall be administered at four (4) years of age and by the fifth birthday. An interval of three (3) months is recommended between each dose of varicella-containing vaccine given between twelve (12) months and twelve (12) years of age. If the second dose was given twenty-eight (28) days or more after the first dose, the second dose does not need to be repeated. A dose of MMR, varicella, one of the single-antigen measles, mumps, rubella, or any other live parenteral vaccine shall not be administered less than twenty-eight (28) days apart, unless administered on the same day.
The varicella vaccination shall not be required for a student who has written certification of infection with varicella that includes either:
D.C. Mun. Regs. tit. 22, r. 22-B136