New figures from the CDC in the United States reveal that one in every 31 children is now diagnosed with autism by the age of eight. The data, gathered from 16 communities in 2022, also shows that children from Asian or Pacific Islander, Black, and Hispanic backgrounds are more likely to receive an autism diagnosis compared to white children. Boys remain more frequently diagnosed than girls, although the gap is narrowing.

The CDC notes that increased early identification is likely a key factor in the rise, especially as more children born in 2018 were diagnosed by age four than those born in 2014. The Autism Society of America has stressed that this growing prevalence does not point to an epidemic but rather to progress in recognising autism earlier, calling for further improvements in early screening and timely access to services.

Across the Atlantic, the UK faces a growing crisis in autism assessment. NHS figures show over 212,000 people were waiting for an assessment as of December 2024 – an 82% increase in two years. Despite NICE guidance stating no one should wait longer than 13 weeks, 90% of those waiting have already surpassed this timeframe.

The British Medical Association warns that these delays can severely hinder a child's development. Campaigners are urging for ringfenced funding to enforce NHS England’s Autism Assessment Framework, highlighting the urgent need to strengthen diagnostic services and provide adequate support.