1. Notes from the field: measles outbreak—Indiana, June–July 2011;MMWR,2011
2. Notes from the field: measles outbreak—Hennepin county, Minnesota, February–March 2011;MMWR Morb Mortal Wkly Rep,2011
3. Confirmed measles cases in England and Wales—An Update to End of May 2008;UK Health Protection Agency,2008
4. European Centre for Disease Prevention and Control. Epidemiological update on measles in EU and EEA/EFTA Member States. 5–12–2011; 9–14–2011.
5. World Health Organization. Measles Outbreaks in Europe. 4–21–2011; 9–14–2011.