In 2013, the Center for Disease Control announced that measles outbreaks were increasing, almost entirely among people who were not properly vaccinated.<ref>[http://www.usatoday.com/story/news/nation/2013/12/05/measles-cdc-vaccine-vaccinations-disease/3878375/]</ref> | In 2013, the Center for Disease Control announced that measles outbreaks were increasing, almost entirely among people who were not properly vaccinated.<ref>[http://www.usatoday.com/story/news/nation/2013/12/05/measles-cdc-vaccine-vaccinations-disease/3878375/]</ref> |