Table 3.

Illustrative quotes for context factors: physical and social opportunity¹⁷⁻¹⁹

COM factor	Theme	Quote ID	Participant ID and quote
Physical Opportunity	Access	PO1	“I need to pay for the ride to take my children there, I have no other costs, but of course I come.“ (R_MS_PV1: rural, fully vaccinated)
		PO2	“So far, it’s never happened they don’t have a vaccine, meaning to say, I trust they have them.” (R_MS_DV1: rural, delayed/partially vaccinated)
		PO3	“Well, there were cases the vaccine was not available, but we arranged it with pediatricians in advance. If they knew there wouldn’t be sufficient stocks, they’d say come in a month and a half or phone us before to check whether it’s available or not, it’s not that we would come to the clinic only to go back without being vaccinated.” (U_AK_PV1: Urban, fully vaccinated)
	Convenience and appeal of vaccination services	PO4	“My child’s health is a priority for me, of course I’ll skip work and all obligations to take him, so that it’s not a barrier for me personally.” (U_AK_PV1: urban, fully vaccinated)
		PO5	“They don’t ask you when you can come, they simply give you the time. And you know how difficult it is here to leave work. What could help me [vaccinate my child] is that, we can go and visit the doctor without an appointment.” (U_VS_OV1: urban, unvaccinated)
		PO6	“This is a children’s ward, so it’s decorated in different colors and drawings. It’s very neat, nice.” (R_MS_PV1: Rural, fully vaccinated)
		PO7	“The situation is very good, at the health center because children who are ill are separated from healthy children, so there are two waiting rooms and I like it very much, and it suits me because it isn’t fair that a child who’s healthy and comes there for a reason like vaccination or simply for any examination or a health certificate should be exposed to bacteria and viruses of the ill children.” (U_VS_PV1: urban, fully vaccinated)
		PO8	“Well, the waiting rooms at the health center aren’t quite adequately structured. Where I used to vaccinate my child, the place had, separate entrances for healthy and ill children, which was in line with protocols, probably. However, in the municipality, the health center (name) that’s not the case, so I’m not happy. Healthy and ill children are mixed when we get there for vaccination.” (U_AK_PV2: urban, fully vaccinated)
	Health systems	PO9	“No, never [have I received a reminder]. Every time I come for vaccination, when talking casually and consulting with the pediatrician we agree on a date of the next vaccination, but a reminder of some sort, via E-mail, mobile telephone, no.” (U_AK_PV1: urban, fully vaccinated)
	Legislation	PO10	“Frankly, I’d introduce it [the law] for children who can’t for health reasons [be vaccinated]. For children who are sufficiently healthy and should receive it. There is a large number of unvaccinated children who for no medical reason, who can be vaccinated. I don’t know whether this [law] would deprive someone of the freedom of choice, but believe me, in this case, I think I would [implement it].“ (U_SM_DV1: urban, delayed/partially vaccinated)
		PO11	“No state can, not one man in the world can tell someone what to do with their life. If I didn’t want to vaccinate my child, well, the laws are there to be violated, I would break that, no matter what the law says.” (U_VS_DV1: urban, delayed/partially vaccinated)
	Availability of written information	PO12	“[I want to know] everything, let’s say, the basics. Why should we vaccinate children or not, and what am I administering to my child? What sort of bacteria is it that will awaken her immune system to recognize tomorrow that she wouldn’t fall ill with measles or mumps? And I’d like that someone tell me the components of the vaccine and which component will protect her from something. Also, what harm can come to her. So, I have never received feedback on what I have just told you now.” (U_VS_DV1: urban, delayed/partially vaccinated)
		PO13	“I visit the Internet because there, you can find anything, anything you’re interested in. I always try to find what suits me; meaning to say, the negative views on vaccination, I avoid. I always check who’s posted a blog, who’s written an article, who’s given an interview. I always check it and then some things there must be taken with caution.” (R_MS_DV1: rural, delayed/partially vaccinated)
		PO14	“There are a lot of stories you read about bad experiences. There are a couple of forums, which I follow for pregnant ladies and breastfeeding mothers, well, literally it’s a big paradox in the way people think, and now, if I say I’m going to vaccinate my child, there will be five comments, I’m like this, I’m like that, why vaccinate, then another mother says, I don’t know, I won’t.” (U_SM_DV1: urban, delayed/partially vaccinated)
		PO15	“I know that at one point there was a campaign against vaccinating children, then the media, TV certainly it reached me. It was in the newspapers, and I’m sure sort of fear crept in and thoughts about whether vaccines are safe, what side effects they can bring about, so that all of us certainly, maybe, we are a bit scared and would postpone.” (U_AK_DV2: urban, delayed/partially vaccinated)
Social Opportunity	Social support	SO1	“I was lucky with my son, I had a wonderful pediatrician, and trusted the pediatrician completely and did not think about anything. When she retired, I kept changing pediatricians. I didn’t have anyone who would give me full and true information [about vaccination]. At certain moments I felt they weren’t completely certain in that area, that they didn’t master it, fully, the topic.” (U_AK_DV2: urban, delayed/partially vaccinated)
		SO2	“I talked with the doctor about the MMR vaccine, but of course, doctors aren’t willing to confirm 100% there will be no adverse effects, that it can’t happen. I had no answer from the doctor.” (U_VS_OV1: urban, unvaccinated)
	Social cues, norms and values	SO3	“There have been situations at work, we had a meeting, and then had a coffee afterward and vaccines were mentioned. I said something like my child hasn’t been vaccinated, then the colleagues attacked me, how come, here-there, and then I went silent, simply stopped, I don’t want to, to create a conflict of any sort, so I rarely speak about it.” (U_VS_OV3: urban, unvaccinated)
		SO4	”The ultimate decision is mine and of my husband, meaning to say, no one can assume making this decision for me and can’t influence anything in the sense that they impose something I don’t want.” (U_SM_DV2: urban, delayed/partially vaccinated)
		SO5	“I know a lady said once that, she’s brought her child for vaccination today, and then the next day she ended up in hospital with some major inflammation and the child spent a long time in hospital. It took major efforts to cure him.” (R_MS_PV1: rural, fully vaccinated)