Children at private schools face the greatest risk from the measles outbreak and could pose a health threat to the rest of the population, a leading doctor has warned.
Professor John Ashton said Britain's 600,000 privately-educated children were at much greater risk of infection than those in the state sector.
Prof Ashton said a mix of large numbers of middle-class children who were not vaccinated against measles following the Wakefield scare in the 1990s, along with pupils from overseas with unknown health records, meant schools could become "reservoirs of disease", the Daily Telegraph said.
He said the risk was similar to that from groups such as gypsies and travellers, who have previously spread the disease.
Prof Ashton, who will soon become president of the Faculty of Public Health, said: "You've got a lot of middle-class, well-off parents, large numbers of whom did not have their children immunised because of the Wakefield scare - which was a very middle-class phenomenon.
"Layered on top of that you have got a lot of children from abroad, especially from the Far East, from countries such as Hong Kong and China, and there are few checks being done to establish their immunisation records."