The majority of parents do what they think is the best for their children.
In GB there is a rumor or truth that the vaccine against measles might cause autism. So it is not only your religion but also superstition and other correct or wrong information which make you react to what you think is the best for your child
So the result is a low uptake of the MMR vaccine.
New figures show there were 1,217 cases in England and Wales from January to November 2008, compared with 990 in 2007.
Six in ten were in children under 15.
Around three million children and teenagers are now believed to be at risk of measles because they missed a dose of the vaccine, or are entirely unprotected.
Immunisation expert Dr Mary Ramsay, of the Health Protection Agency, said: 'This continued rise is due to relatively low MMR vaccine uptake over the past decade and there are now a large number of children who are not fully protected.
'This means that measles, which is highly infectious, is spreading easily.