Page 123 - Preventing pertussis in early infancy - Visser

information to make an informed and deliberate decision, and (c) indicate mandatory vaccination might lead to adverse effects on trust and uptake. In order to better attune vaccination programmes to these contextual moral convictions, we suggest that more effort should be put in helping people to deal with the difficulty they experience in making a deliberate choice about vaccination. Therefore, we suggested to develop a deliberation tool that helps people to articulate personal and societal values and use these to weigh the information they gather from diverse sources to make a choice that they can truly consider their own.
In chapter 4 we describe how we quantitatively assessed parental intention to accept a pertussis cocooning vaccination. In addition, the personal and psychosocial determinants of this intention and the beliefs underlying the attitude of parents towards pertussis cocooning vaccination were assessed. Parents returned 282 questionnaires. A large majority of the par ents (78%) reported a positive intention to accept a pertussis cocooning vaccination. Attitude, anticipated negative affect as a result of non-acceptance, anticipated negative affect as a result of acceptance and decisional uncertainty were significantly associated with intention. General vaccination beliefs, moral norm, perceived susceptibility of pertussis in children, and efficacy outcome expectations were significant correlates of attitude towards pertussis cocooning vaccination.
In chapter 5 we assess the intention to accept a pertussis cocooning vaccination, and examined the determinants that influence this intention among healthcare workers (HCWs) in maternity and paediatric care. We then evaluate the behavioural beliefs underlying HCWs’ attitudes towards pertussis cocooning. Overall, 486 maternity assistants, 320 midwives, and 200 paediatric nurses completed the questionnaire; 45%–63% reported their intentions to accept pertussis vaccination. Attitude, anticipated affect regarding non-acceptance, and decisional uncertainty were uniquely associated with the intention to accept a pertussis vaccination. The reported attitude towards pertussis cocooning vaccination is further explained by their general vaccination beliefs, agreement with a policy advice to vaccinate HCWs, the perceived cost-benefit ratio, and the perceived personal responsibility to prevent pertussis in patients.
In chapter 6 we describe the application of IM for systematic intervention development of a pertussis vaccination programme for HCWs. The primary programme goal is to optimise pertussis vaccination uptake among HCWs who are directly involved in the care for infants younger than 6 months. We identified the most relevant and changeable determinants that influence pertussis vaccination acceptance among these HCWs, and determined specific behavioural and change objectives for HCWs in order to achieve the programme goal. On the basis of a literature review, behavioural change theory and consensus in the planning group, we decided how to attune the final programme content to the most relevant and changeable determinants found, including the content of: an invitation letter, an information folder, a website and posters, and an online tool assisting deliberation. By following the IM protocol, we were able to develop the basis for a theory-
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