RT Journal
A1 Bronson-Lowe D, Anderson SM
T1 EFfects of a minimum interval immunization schedule for diphtheria and tetanus toxoids and acellular pertussis vaccination during a pertussis outbreak
JF Archives of Pediatrics & Adolescent Medicine
JO Archives of Pediatrics & Adolescent Medicine
YR 2009
FD May 4
VO 163
IS 5
SP 417
OP 421
DO 10.1001/archpediatrics.2009.53
UL http://dx.doi.org/10.1001/archpediatrics.2009.53
AB Objective 
    To examine the impact of a minimum interval schedule for administering diphtheria and tetanus toxoids and acellular pertussis vaccine (DTaP) in infants during a statewide pertussis outbreak on receipt of inactivated polio vaccine (IPV) and pneumococcal conjugate vaccine (PCV).Design 
    Retrospective cohort study using the state immunization registry.Setting 
    Arizona.Participants 
    Arizona children born between February 1 and September 30, 2005, who received their initial DTaP dose during a statewide pertussis outbreak (N = 45 129).Main Exposures 
    Children who received at least 1 dose of DTaP on the minimum interval schedule (minimum interval group) compared with children who received all doses of DTaP on the standard childhood and adolescent immunization schedule (standard group).Outcome Measures 
    Timing and receipt of 3 doses of the DTaP, IPV, and PCV.Results 
    Compared with children in the standard group, children in the minimum interval group were more likely to receive 3 doses of DTaP (relative risk, 1.34; 95% confidence interval, 1.32-1.35), 3 doses of IPV (1.27; 1.25-1.29), and 3 doses of PCV (1.37; 1.35-1.39).Conclusion 
    Recommending a minimum interval DTaP schedule during a statewide pertussis outbreak had a positive association with the receipt of IPV and PCV, 2 vaccines normally administered at the same time as DTaP.