The first dose of diphtheria, tetanus, whole-cell pertussis (DTP) or diphtheria, tetanus, acellular pertussis (DTaP) shall be administered not earlier than six (6) weeks of age and not later than two (2) months of age.
The second dose of DTP or DTaP shall be administered not earlier than four (4) weeks after the first dose and not later than two (2) months after the first dose.
The third dose of DTP or DTaP shall be administered not earlier than four (4) weeks after the second dose and not later than two (2) months after the second dose.
A fourth dose of DTP or DTaP shall be administered:
A booster, or fifth dose of DTP or DTaP, shall be administered:
A fifth dose of DTP or DTaP shall not be required for a student who received the fourth dose on or after four (4) years of age.
Any licensed DTaP or DTP vaccine or combination vaccine may be administered as an alternate for any dose of the series for which it is licensed.
For a student under seven (7) years of age, pediatric diphtheria tetanus (DT) vaccine may be administered instead of DTaP or DTP only when the provider follows current acceptable guidelines for valid contraindications for pertussis vaccine, as recommended by the ACIP. If DT is administered instead of DTaP or DTP, a physician or Advance Practice Nurse shall also provide a signed medical exemption request for pertussis to the student's parent or guardian for the certification required by D.C. Official Code § 38 -502.
If a student receives pediatric DT instead of DTaP or DTP, the number and timing of the doses needed to complete the DT series shall be as follows:
D.C. Mun. Regs. tit. 22, r. 22-B131