If anti-vaccine are to blame then you’d think they’d be the only ones getting it which isn’t the case.
“Of the 34 people for whom the California Department of Public Health had vaccination records, only five had received both doses of the measles vaccine, according to the department. One received just the first dose. Nationally, officials are seeing the same trend, Schuchat said last week.”
5 people out of 34 got both doses of the vaccine and still got it.
BTW here is the link: http://abcnews.go.com/Health/measles-cases-climb-102-cdc/story?id=28669137
Out of the literal thousands of immunized people exposed 5 got it. Out of the vastly smaller, probably a few hundred non-immunized folks exposed to it, a few dozen got it.
Obviously the vaccine cut the odds of being infected drastically and the 5 that got it were unlucky enough to have had a failed immunization and exposure due to idiots.
The 34 people were just the ones for whom they had vaccination records out of the total of 91 measles cases in California. But you really need to compare the 5 people to all the vaccinated Californians who went to Disney properties at the same time and didn't get measles.
Suppose that 1/3 of Californians who go to Disney properties are not vaccinated. that would mean that for every 86 (91-5) who get measles, there should be 172 people who were exposed but didn't get it. But it turns out that 5 of these did get it. So we should be comparing the 5 people to something like 172 which is about a 3% vaccine failure rate.
(The effectiveness might be even better if there are more than 2/3 of Disney-going Californians who are vaccinated.)