In a post a couple weeks ago, I commented on the ethical dimension of opting out of vaccination against serious contagious diseases:
Of course, parents are accountable to the kids they are raising. They have a duty to do what is best for them, as well as they can determine what that is. They probably also have a duty to put some effort into making a sensible determination of what’s best for their kids (which may involve seeking out expert advice, and evaluating who has the expertise to be offering trustworthy advice).
But parents and kids are also part of a community, and arguably they are accountable to other members of that community. I’d argue that members of a community may have an obligation to share relevant information with each other — and, to avoid spreading misinformation, not to represent themselves as experts when they are not. Moreover, when parents make choices with the potential to impact not only themselves and their kids but also other members of the community, they have a duty to do what is necessary to minimize bad impacts on others. Among other things, this might mean keeping your unvaccinated-by-choice kids isolated from kids who haven’t been vaccinated because of their age, because of compromised immune function, or because they are allergic to a vaccine ingredient. If you’re not willing to do your part for herd immunity, you need to take responsibility for staying out of the herd.
Otherwise, you are a free-rider on the sacrifices of the other members of the community, and you are breaking trust with them.
(Bold emphasis added.)
In the comments on that post, Jennifer takes issue with the free-rider characterization:
My kids are not vaccinated, and I am not a free-rider. So far my kids have had chickenpox, pertussis, and measles. I expect my kids to get many of the diseases for which there are vaccines. By the way, the measles was from a child who had recently gotten the MMR, and was shedding the live virus.
Please stop the scaremongering. My kids got through those illnesses just fine, and are extremely healthy. I’ve chosen the possibility of occasional acute disease over the very real possibility of chronic disease. For example, 1 in 10 kids now has asthma! 1 in 67 now has autism.
I thought, therefore, that it would be worthwhile to examine at more length my claim that vaccination refuseniks are free-riders.