Vaccination at 1 Month and 26 Days of Age
No, these vaccines should NOT be given at 1 month and 26 days of age—the infant must wait until at least 6 weeks (42 days) of age to receive DTaP, Hib, pneumococcal, polio, and rotavirus vaccines. 1, 2
Minimum Age Requirements
The critical issue here is that the minimum age for DTaP, IPV, Hib, pneumococcal conjugate, and rotavirus vaccines is 6 weeks of age 1, 2. At 1 month and 26 days (approximately 56 days or 8 weeks), this infant has just met the minimum age requirement and can now receive these vaccines.
Specific Vaccine Timing:
DTaP, IPV, Hib, Pneumococcal (PCV): Minimum age is 6 weeks; standard schedule begins at 2 months of age 1, 2, 3
Rotavirus: Minimum age for first dose is 6 weeks, with the critical requirement that the first dose must be administered between 6 and 12 weeks of age, and the series should not be started after 12 weeks of age 1, 2, 4
Hepatitis B: This vaccine CAN be given now as the second dose, since the minimum age for any dose after birth is 4 weeks, and the second dose should be administered at 1-2 months of age 1, 2
Recommended Action at This Age
At 1 month and 26 days (approximately 8 weeks), the infant should receive:
- Hepatitis B vaccine (second dose) - This is appropriate timing 1, 2
- Wait 2 more days to reach exactly 2 months (8 weeks) of age, then administer the full series including DTaP, IPV, Hib, PCV, and rotavirus 1, 2, 3
Standard 2-Month Visit Schedule
The complete vaccine series at 2 months of age includes: 1, 2, 3
- DTaP (first dose)
- IPV (first dose)
- Hib (first dose)
- Pneumococcal conjugate vaccine (first dose)
- Rotavirus (first dose)
- Hepatitis B (second dose, if not already given)
Critical Rotavirus Timing Consideration
A crucial pitfall to avoid: The rotavirus vaccine has a narrow window for initiation 1, 2, 4:
- First dose must be given between 6-12 weeks of age
- Do not start the series after 12 weeks of age
- Maximum age for any dose is 32 weeks
- At 1 month and 26 days (approximately 8 weeks), the infant is within the acceptable window but should receive the first dose promptly
Concomitant Administration
All these vaccines can be safely administered together at the same visit 4, 5, 6. Clinical trials have demonstrated that DTaP, IPV, Hib, hepatitis B, pneumococcal conjugate, and rotavirus vaccines can be coadministered without diminishing immune responses to any component 4, 5, 6.
Practical Recommendation
Schedule the infant for vaccination at exactly 2 months of age (8 weeks) to receive the complete series 1, 2, 3. If the hepatitis B vaccine second dose has not yet been given, it can be administered at this visit as well 2. This approach ensures compliance with minimum age requirements while avoiding delays that could leave the infant vulnerable to vaccine-preventable diseases.