D.C. Mun. Regs. tit. 22, r. 22-B137
Beginning with the 2008/2009 school year, pneumococcal conjugate 7-valent vaccine (PCV7) shall be required for all students under the age of five (5) years.
The first dose of PCV7 shall be administered no earlier than six (6) weeks of age and not later than two (2) months of age.
The second dose of PCV7 shall be administered no earlier than one (1) month after the first dose and not later than two (2) months after the first dose.
The third dose of PCV7 shall be administered no earlier than one (1) month after the second dose and not later than two (2) months after the second dose.
A booster dose of PCV7 shall be administered not earlier than two (2) months after the previous dose, not earlier than twelve (12) months of age, and by sixteen (16) months of age.
An unvaccinated student between seven (7) and eleven (11) months of age shall receive two (2) doses of PCV7 to complete the primary series, administered no earlier than one (1) month apart but not later than two (2) months apart. A booster dose shall be administered no earlier than two (2) months after the previous dose at twelve (12) months of age and by sixteen (16) months of age.
An undervaccinated student between seven (7) and eleven (11) months of age who has received one (1) or two (2) doses of PVC7 before age seven (7) months, shall receive one (1) dose administered no earlier than one (1) month after the previous dose but not later than two (2) months after the previous dose. A booster dose shall be administered no earlier than two (2) months after the previous dose at twelve (12) months of age and sixteen (16) months of age.
An unvaccinated student between twelve (12) and twenty-three (23) months of age shall receive two (2) doses of PCV7 administered two (2) months apart.
An undervaccinated student between twelve (12) and twenty-three (23) months of age who has received one (1) dose of PCV7 before twelve (12) months of age shall receive two (2) doses administered two (2) months apart.
An undervaccinated student between twelve (12) and twenty-three (23) months of age who has received one (1) dose of PCV7 on or after age twelve (12) months shall receive one (1) dose of PCV7 administered two (2) months after the previous dose.
An undervaccinated student between twelve (12) and twenty-three (23) months of age, who has received two (2) or three (3) doses of PCV7 before age twelve (12) months, shall receive one (1) dose two (2) months after the previous dose.
An unvaccinated student twenty-four (24) months of age or older but not yet five (5) years of age shall receive a single dose of PCV7. A booster dose shall not be required.
An undervaccinated student twenty-four (24) months of age or older but not yet five (5) years of age who has an incomplete schedule shall receive one (1) dose of PCV7 two (2) months after the previous dose.
The PCV7 vaccine shall not be required for a student five (5) years of age or older regardless of PCV7 vaccination status.
D.C. Mun. Regs. tit. 22, r. 22-B137