Does the Order in Which Vaccines Are Administered Affect Pain Response?
Drug: Pentacel (DPTaP+Hib)
Drug: Prevnar (conjugated pneumococcal vaccine)
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||Does the Order in Which Vaccines Are Administered Affect Pain Response? A Randomized, Double-blind, Clinical Trial of Pentacel vs. Prevnar|
- pain response to vaccination with Prevnar and Pentacel, as measured by The Modified Behavioral Pain Scale (MBPS) and the Visual Analogue Scale (VAS) [ Time Frame: Immediately after vaccination ]
|Study Start Date:||July 2006|
|Study Completion Date:||July 2008|
|Primary Completion Date:||June 2007 (Final data collection date for primary outcome measure)|
Active Comparator: Pentacel
The subjects in this arm will be vaccinated with Pentacel
|Drug: Pentacel (DPTaP+Hib)|
Active Comparator: Prevnar
The subjects in this arm will be vaccinated with Prevnar
|Drug: Prevnar (conjugated pneumococcal vaccine)|
Childhood vaccination is one of the most effective public health measures worldwide, with few serious adverse effects reported. However, pain on vaccination continues to be a frequent occurrence and is the most common cause of childhood iatrogenic pain. In a recent study of paediatricians in the USA, more than ninety percent reported at least one parental vaccine refusal in the past year. The most common concerns cited by parents were short-term reactions and pain from multiple injections.
One of the factors responsible for vaccination pain is the vaccine material itself. Even the same vaccine, when made by different pharmaceutical companies may produce different pain responses. Anecdotal reports from doctors and nurses indicate that Pentacel (DPTaP+Hib) is a relatively painless vaccine to administer whereas Prevnar (conjugated pneumococcal vaccine) causes significant pain on injection and severe distress to the infant being vaccinated. For this reason, many vaccinators administer Pentacel [DPT] prior to Prevnar [PCV] when providing both vaccines in one visit. However, the difference in infant pain responses has not been documented. Although it has been shown that very early pain events affect infants' later experience of pain, it has not been demonstrated that the sequence in which vaccines are administered affects pain response. This study will assess whether there should be a predetermined sequence recommended for administering these two vaccines, with the less painful vaccine (Pentacel) being given first.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00390130
|The Hospital for Sick Children|
|Toronto, Ontario, Canada, M5G 1X8|
|Principal Investigator:||Moshe Ipp, MD||The Hospital for Sick Children, Toronto Canada|