Study finds rate of spectrum disorder is 'much higher' than thought - with black and Chinese children up to 40% more likely to have the condition UK autism rates have also increased and show differences in ethnic minorities
Autistic children are also more likely to face a 'significant social disadvantage'
New figures comes ahead of World Autism Awareness Day this Friday, April
Black and Chinese pupils are 26 per cent and 38 per cent more likely to be autistic, respectively, compared to white children, they say.