Table 2 Categories of concerns about vaccination adapted from [5, 17]

1. Issues with harmful effects of vaccination

 a. Concerns that immuno-compromising

 b. Concerns that causes diseases / general harm / adverse effects

 c. Concerns that is harmful if the child is sick

 d. Concerns with side-effects of vaccination (including pain)

 e. Parents remember their own or other adverse experiences

 f. Exposed to pathogens in clinics

 g. Fear of needles

 h. Vaccines are provided at too young age / too many vaccines and doses

2. Issues of mistrust with vaccination programmes/services

 a. Rumours / mistrust of medical community

 b. Lack of confidence in vaccines effectiveness

 c. Religious reasons

 d. Not enough information to make the decision

3. Health system issues

 a. Concern with costs / access to the health facility

 b. Concern with time / working hours of services

 c. Health staff are unpleasant / untrained

 d. Concern with not being able to get vaccination

 e. Concern with quality of the vaccines

4. Other issues