Page 37 - Preventing pertussis in early infancy - Visser

understanding of the factors involved. The inclusion of new participants until data saturation was achieved and the number of individual interviews and focus group meetings ensures good validity of the data.
Conclusion
This study provides an indication of which influencing factors should be optimized to effectively implement pertussis cocooning in different target groups, or adapt a pertussis cocooning programme where it already exists. It provides perceived determinants of the intention to accept a pertussis cocooning vaccination for parents as well as for paediatric nurses, maternity assistants and midwives, and is of relevance especially in countries in which pertussis vaccination is not mandated for these groups. These results need quantification for target groups and settings which have not yet been studied. The heterog eneity of our study’s determinants demonstrates the complexity of people’s decision-making about vaccination for pertussis cocooning. Experience, information, and trust are the predominant themes that emerged from the described determinants. These themes require particular attention in future research on vaccination acceptance, especially with regard to their role in use and implementation in policy and practice.
Acknowledgements
We would like to thank the participating parents and healthcare workers for their open and thoughtful cooperation, J.W. Weenink and L. Kamp for their assistance with the focus groups, R. Willemse for the transcriptions, and W.L.M. Ruijs and S. van der Burg for their advice during the analysis. We thank the professional organisations that enabled the participation of their employees in this study. Special thanks to R.A.C. Ruiter for his constructive advice regarding an earlier draft of this manuscript.
Qualitative Study
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