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Measles infection was eliminated from the US in 2000, however, a current ongoing outbreak has now reached a record number of cases.
The states reporting the highest number of cases are Ohio, where a large outbreak has occurred among the Amish community, California and New York. The majority of cases (97%) have been imported to the US by returning American travellers who became infected abroad. Around 50% of infections were acquired in the Philippines where a large outbreak has affected 32 000 individuals. Of the imported infections, 40 were in unimmunised American travellers.
It should be confirmed that children have received their recommended doses of MMR at 12-15 months of age and again pre-school around 3 years 6 months, while unimmunised adults who have not had the disease themselves may consider vaccination if thought to be at risk. Two doses of MMR vaccine are required to give adequate protection.