Professor Mike Morgan, NHS England's national clinical director for respiratory services, said: "These statistics are a call to action.
"Every patient should have a care plan which should be regularly reviewed and patients should be supported to manage their asthma, including effective inhaler technique and knowledge of their condition.
"In February last year, National Institute of Health and Care Excellence (Nice) produced a set of quality standards which make it clear that local commissioners should integrate services so that asthma sufferers receive a consistently high quality service from childhood to adulthood."
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