Asthma today affects more than 300 million people worldwide and its prevalence is increasing, particularly among children. The rise in asthma prevalence has been likened to an epidemic, and is expected to afflict up to 400 million people by 2025.1 In Singapore, it is estimated that 1 in 5 children suffer from it. It is a chronic condition with considerable morbidity and mortality, with many asthma patients having a self-perception of poor health.2 The cost of asthma is also high, and is conservatively thought to exceed US$33.93 million per annum in Singapore.3
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