@ru_ri I might go for, "Reducing herd immunity puts infants and immunocompromised people at risk, so I don't think it's an ethical decision."
@stonefruit It is interesting! http://www.ncbi.nlm.nih.gov/pubmed/9433057 is one citation, 8-9 cases per year caused by OPV after wild virus eradicated. (IPV now used so it's not an issue in the US but is in some countries.)
@stonefruit Yes, big epidemics were before vaccines! In the period between when wild polio was eradicated in the US and the inactivated vaccine was widely utilized, the only cases were vaccine-induced. Im guessing 1970-2000 on dates. It's incredibly rare, but another case when there were legitimate reasons for individuals to opt out of vaccination even though it probably still benefited the population as a whole.
@Ophelia Isn't it? If government scientists in the past said various vaccines were safe, and it turned out they weren't, isn't it logical to assume they could be mistaken again?
Again, I believe in vaccine safety and their statistical benefits, but don't think it's illogical to question it. And believe that requiring vaccines would be a nightmare and lead to further fear and distrust of the government.
In defense of anti-vaxers, there have been a number of vaccines that were pulled because of bad side effects. While I personally trust the track records of all the vaccines currently used in the US, past history leads some legitimacy to fears. (Remember that vaccines were the ONLY way people got polio in the US for a while, until they moved to the current dead vaccine.) When you know about those sorts of issues, and your cousin's kid coincidentally developed health issues after the MMR or whatever, and your kids' personal risk of ill effects from contracting measles are vanishingly low, there is a logic to their choices.
Wait, people care that much about teeth? And how are personal electronics dating expenses?
@squid v. whale My point is that anecdotes aren't useful. Listing horror stories about bike accidents doesn't mean the conclusion "everyone should always wear a bike helmet" is obvious. Data suggests bicycling is low risk, with or without a helmet. Some people prefer to wear helmets, just as some people prefer to wear anti-germ masks on the subway. Not wearing a helmet is not an irresponsible choice any more than not wearing masks is.
@squid v. whale How many people do you know who have been injured in car aciidents when they were IN the car?
@Susanna See also, "I'm doing a cross-country road trip in my car!" That has a much greater risk of death than normal levels of bike commuting in a month (helmet or no) but no one ever gives people shit about the risks they subject themselves and their kids to from driving a lot.
@AW@twitter I find them really uncomfortable (yes, I've tried various kinds) when they're worn as tightly as they need to be to provide any protection (more than half the people I see wearing helmets don't have them fitted right, incidentally). Other people don't wear them because they can be a hassle to store in a way that keeps them clean and dry and on the bike, or because they don't want to take the time to strap them on and off each time they hop on and off a bike on short trips or errands. Other people find them too hot. Other people use bike shares and hauling a helmet around when not on a bike is inconvenient.