I got this link from Reddit, showing the correlation between those municipalities that voted for the SGP (a far right-wing fundamentalist Christian party) on the right and the number of measles outbreaks on the left. It appears that those areas with high religious concentrations are also much less likely to vaccinate their kids, and it shows. Too bad in these cases that kind of attitude doesn’t just affect them, but everyone around them.
Just in case it’s not clear in the left side, here’s a map with the vaccination rate on its own:
More information can be found here, provided you filter it through a translator first. I know it’s not necessary for me to tell you guys, but this once again underscores the importance of immunizations.